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  • An oregon spotted frog (Rana pretiosa) egg mass just below the surface of Conboy Lake. Conboy Lake National Wildlife Refuge, Washington. Mount Adams is visible on the horizon.
    frog_egg_mass_32208OSf-113.jpg
  • Detail of a developing oregon spotted frog (Rana pretiosa) egg, Conboy Lake National Wildlife Refuge, Washington.
    frog_egg_mass_32208OSf-97.jpg
  • An oregon spotted frog (Rana pretiosa) egg mass just below the surface of Conboy Lake. Conboy Lake National Wildlife Refuge, Washington.
    frog_egg_mass_32208OSf-171-Edit.jpg
  • An oregon spotted frog (Rana pretiosa) egg mass just below the surface of Conboy Lake. Conboy Lake National Wildlife Refuge, Washington.
    frog_egg_mass_32208OSf-153-Edit-Edit.jpg
  • Dertail of an egg mass from an oregon spotted frogs (Rana pretiosa), Conboy Lake National Wildlife Refuge, Washington.
    frog_egg_mass_32208OSf-36.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    kyle_tidwell-71712sf2-314.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    kyle_tidwell-71712sf2-241.jpg
  • The webbed foot of an Oregon spotted frog (Rana pretiosa) Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-108.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    kyle_tidwell-71712sf2-357.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    kyle_tidwell-71712sf2-345.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    kyle_tidwell-71712sf2-330.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    kyle_tidwell-71712sf2-317.jpg
  • The webbed foot of an Oregon spotted frog (Rana pretiosa) Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-107.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    kyle_tidwell-71712sf2-356.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    kyle_tidwell-71712sf2-342.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    kyle_tidwell-71712sf2-335.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    kyle_tidwell-71712sf2-315.jpg
  • The webbed foot of an Oregon spotted frog (Rana pretiosa) Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-109.jpg
  • A flag marks a spot where oregon spotted frogs (Rana pretiosa) have created an egg mass in Conboy Lake. Conboy Lake National Wildlife Refuge, Washington.
    frog_egg_mass_32208OSf-47-Edit-2.jpg
  • Detail of a developing oregon spotted frog (Rana pretiosa) egg, Conboy Lake National Wildlife Refuge, Washington.
    frog_egg_32208OSf-69-Edit.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-_H4A0447-Edit.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. Temporarily captive under permit. © Michael Durham / www.DurmPhoto.com
    spotted_frog-72212CB-251.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. Temporarily captive under permit. © Michael Durham / www.DurmPhoto.com
    spotted_frog-72212CB-236.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-_H4A0523-Edit.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-_H4A0440-Edit.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-_H4A0419-Edit.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. Temporarily captive under permit. © Michael Durham / www.DurmPhoto.com
    spotted_frog-72212CB-240.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. Temporarily captive under permit. © Michael Durham / www.DurmPhoto.com
    spotted_frog-72212CB-235.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-_H4A0499-Edit.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-_H4A0485-Edit.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-_H4A0466-Edit.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. Temporarily captive under permit. © Michael Durham / www.DurmPhoto.com
    spotted_frog-72212CB-247.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. Temporarily captive under permit. © Michael Durham / www.DurmPhoto.com
    spotted_frog-72212CB-244.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. Temporarily captive under permit. © Michael Durham / www.DurmPhoto.com
    spotted_frog-72212CB-239.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. Temporarily captive under permit. © Michael Durham / www.DurmPhoto.com
    spotted_frog-72212CB-233.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. Temporarily captive under permit. © Michael Durham / www.DurmPhoto.com
    spotted_frog-72212CB-228.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. Temporarily captive under permit. © Michael Durham / www.DurmPhoto.com
    spotted_frog-72212CB-226.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-112.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-_H4A0492-Edit.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-110.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-113.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-104.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-103.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-100.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-115.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-106.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-105.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-102.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-101.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-114.jpg
  • The Oregon spotted frog (Rana pretiosa) has been lost from at least 78 percent of its former range. Precise historic data is lacking, but this species has been documented in British Columbia, Washington, Oregon, and California. It is believed to have been extirpated from California. It is currently known to occur from extreme southwestern British Columbia, south through the eastern side of the Puget/Willamette Valley Trough and the Columbia River Gorge in south-central Washington, to the Cascades Range, to at least the Klamath Valley in Oregon. In 1993, the U.S. Fish and Wildlife Service determined that the Oregon spotted frog warranted listing under the Endangered Species Act, but doing so was precluded by higher priority listing actions. The frog then became a candidate for listing in the future. Photographed in the Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    Rana_pretiosa_71812-111.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-152.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-128.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-106-2.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-137.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-126.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-111-2.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-107-2.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-169.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-147.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-143.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-139.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-134.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-124.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-122.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-114.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-109-2.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-108-2.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-103-3.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-148.jpg
  • Columbia Spotted frog (Rana luteiventris) photographed at night via permit from the National Park Service at Big Hole National Battlefield, Montana.
    Columbia_Spotted_frog-7114bh-104-3.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-273.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-276.jpg
  • Oregon spotted frog (Rana pretiosa). These frogs are disappearing from their former ranges because of habitat loss and predation by non-native wildlife.
    Oregon_spotted_frog_10706043.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-294.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-279.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-212.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-301.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-293.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-287.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-269.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-204.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-258.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-255.jpg
  • Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-128.jpg
  • Oregon spotted frog (Rana pretiosa). These frogs are disappearing from their former ranges because of habitat loss and predation by non-native wildlife.
    Oregon_spotted_frog_10706026.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-306.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-307.jpg
  • Student Biologist Kyle Tidwell studies Oregon Spotted Frog (Rana pretiosa) in Conboy Lake National Wildlife Refuge, Washington. © Michael Durham / www.DurmPhoto.com
    oregon_spotted_frog-71712sf2-167.jpg
  • Washington Fish and Wildlife Senior Research Scientist Mark Hayes holdes a young oregon spotted frog (Rana Pretios) in the Conboy Lake National Wildlife Refuge during a survey as participants look on.
    marc_hayes_32208OSf-146-Edit.jpg
  • Washington Fish and Wildlife Senior Research Scientist Mark Hayes holdes a young oregon spotted frog (Rana Pretios) in the Conboy Lake National Wildlife Refuge during a survey as participants look on.
    marc_hayes_32208OSf-140-Edit.jpg
  • Biologist Howard Browers from the U.S. Fish and Wildlife Service looks for spotted frog (Rana pretiosa) egg masses in Conboy Lake National Wildlife Refuge during a survey.
    biologist_32208OSf-127.jpg
  • Biologist Howard Browers from the U.S. Fish and Wildlife Service looks for spotted frog (Rana pretiosa) egg masses in Conboy Lake National Wildlife Refuge during a survey.
    biologist_32208OSf-125.jpg
  • Biologist Howard Browers from the U.S. Fish and Wildlife Service looks for spotted frog (Rana pretiosa) egg masses in Conboy Lake National Wildlife Refuge during a survey.
    biologist_32208OSf-124.jpg
  • A california treefrog (Pseudacris cadaverina) in a small stream running through granite boulders, Anza-Borrego State Park, California. Cryptic coloration makes these treefrogs difficult to spot when sitting on a granitic rock.
    camouflaged_frog_FS5710CT1.jpg
  • A california treefrog (Pseudacris cadaverina) in a small stream running through granite boulders, Anza-Borrego State Park, California. Cryptic coloration makes these treefrogs difficult to spot when sitting on a granitic rock.
    camouflaged_frog_FS5710CT2.jpg
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