Michael Durham Photography

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  • A six-week old bobcat kitten (Felis rufus) with rodent prey. Temporarily captive in a rehab facility, near Eugene Oregon.
    _bobcat_kitten_Felis_rufus-MDurham20...jpg
  • A european house mouse (Mus musculus) emerging from wall molding. Portland, Oregon. These rodents have followed humans around the world to every continent. captive.
    house_mouse_51406001.jpg
  • A deer mouse (Peromyscus maniculatus) in the midst of an evasive jump. When threatened, these mice will reflexively jump into the air to avoid being caught.
    jumping_mouse_MDurham519_38.jpg
  • A deer mouse (Peromyscus maniculatus) in the midst of an evasive jump. When threatened, these mice will reflexively jump into the air to avoid being caught.
    jumping_mouse_MDurham512_37.jpg
  • A wild Pinon mouse - (Peromyscus truei) photographed at night with an automated camera. Pinon mice have very specific habitat requirements - rocks and pinyon or juniper trees. Central Oregon is the northern limit of their range. Clarno unit of the John Day Fossil Beds National Monument, Central Oregon.
    pinyon_mouse_DurHM260.jpg
  • A wild Pinon mouse - (Peromyscus truei) photographed at night with an automated camera. Pinon mice have very specific habitat requirements - rocks and pinyon or juniper trees. Central Oregon is the northern limit of their range. Clarno unit of the John Day Fossil Beds National Monument, Central Oregon.
    pinyon_mouse_DurHM259_1.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle. Note the parasitic mites around the eye.
    Red_Tree_vole_21414rv-143.jpg
  • A wild mountain beaver (Aplodontia rufa) juvenile emerging from its burrow at night in the Mount Hood National Forest, Oregon.
    mountain_beaver_Aplodontia_rufa_MDur...jpg
  • A wild mountain beaver (Aplodontia rufa) emerging from its burrow at night in the Mount Hood National Forest, Oregon.
    mountain_beaver_Aplodontia_rufa_MDur...jpg
  • A deer mouse (Peromyscus maniculatus) in the midst of an evasive jump. When threatened, these mice will reflexively jump into the air to avoid being caught.
    jumping_mouse_MDurham513_37.jpg
  • A bushy-tailed woodrat (Neotoma cinera) runs along scree - at night in Camp Creek Canyon in The Nature Conservancy's Zumwalt Prairie Perserve. NE Oregon.
    jumping_woodrat_DurHM245.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle. Note the parasitic mites around the eye.
    Red_Tree_vole_21414rv-144.jpg
  • A wild mountain beaver (Aplodontia rufa) emerging from its burrow at night in the Mount Hood National Forest, Oregon.
    mountain_beaver_Aplodontia_rufa_MDur...jpg
  • A red tre vole (Arborimus longicaudus) mom and her 30 day old offspring. Red tree voles are nocturnal and live in Douglas fir tree-tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-236.jpg
  • A red tre vole (Arborimus longicaudus) mom and her 30 day old offspring. Red tree voles are nocturnal and live in Douglas fir tree-tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-231.jpg
  • A red tree vole (Arborimus longicaudus) stripping away the resin duct from a Douglas fir needle. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-213.jpg
  • A red tree vole (Arborimus longicaudus) eating a Douglas fir needle. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-205.jpg
  • A young red tree vole (Arborimus longicaudus). Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-183.jpg
  • Norway rat(s) (Rattus Norvegicus) emerging from a rat hole in a suburban yard at night. Portland, Oregon. © Michael Durham / www.DurmPhoto.com
    urban_rat-71412RR-206.jpg
  • Norway rat(s) (Rattus Norvegicus) emerging from a rat hole in a suburban yard at night. Portland, Oregon. © Michael Durham / www.DurmPhoto.com
    urban_rat-71412RR-188.jpg
  • Norway rat(s) (Rattus Norvegicus) emerging from a rat hole in a suburban yard at night. Portland, Oregon. © Michael Durham / www.DurmPhoto.com
    urban_rat-71412RR-184.jpg
  • A male red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-278.jpg
  • A male red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-268.jpg
  • A male red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-206.jpg
  • A male red tree vole (Arborimus longicaudus) eating a Douglas fir needle. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-197.jpg
  • A male red tree vole (Arborimus longicaudus) eating a Douglas fir needle. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-192.jpg
  • A male red tree vole (Arborimus longicaudus) eating a Douglas fir needle. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-173.jpg
  • A male red tree vole (Arborimus longicaudus) eating a Douglas fir needle. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-172.jpg
  • A male red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-150.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-140.jpg
  • A male red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-134.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-106.jpg
  • A western gray squirrel (Sciurus griseus) about to jump from a tree limb in the Dechutes National Forest, Oregon.(1 0f 2)
    jumping_gray_squirrel_MDurham661_3.jpg
  • A true lemming (Lemmus sibiricus) portrait. Range: Siberia to Alaska. Photographed in captivity, Summer 1997.
    true_lemming_Lemmus_sibiricus_DurHM2...jpg
  • A pair of young bushy-tailed woodrats (Neotoma cinera) get into a scrap - at night in Camp Creek Canyon in The Natuer Conservancy's Zumwalt Prairie Perserve. NE Oregon.
    bushy_woodrat_night_DurHM196.jpg
  • A western harvest mouse (Reithrodontomys megalotis) forages for food under a penstemon shrub. The Natuer Conservancy's Zumwalt Prairie Preserve in NE Oergon.
    western_harvest_mouse_DurHM191.jpg
  • The gnawing incisors of a brown rat (Rattus norvegicus).
    rar_teeth_DurHM142.jpg
  • A brown rat (Rattus norvegicus) scavengin in a residential garbage can. Portland, Oregon. These rats are not native, but are european in origin and have followed human settlements around the world. Captive illustration.
    garbage_city_rat_DurHM139.jpg
  • A brown rat (Rattus norvegicus) near a city sewer outlet. Portland, Oregon. These rats are not native, but are european in origin and have followed human settlements around the world. Captive illustration.
    sewer_rat_DurHM136.jpg
  • A brown rat (Rattus norvegicus) near a city sewer outlet. Portland, Oregon. These rats are not native, but are european in origin and have followed human settlements around the world. Captive illustration.
    sewer_rat_DurHM134.jpg
  • A brown rat (Rattus norvegicus) cleaning itself near a city sewer outlet. Portland, Oregon. These rats are not native, but are european in origin and have followed human settlements around the world. Captive illustration.
    sewer_rat_DurHM132.jpg
  • A brown rat (Rattus norvegicus) near a city sewer outlet. Portland, Oregon. These rats are not native, but are european in origin and have followed human settlements around the world. Captive illustration.
    sewer_rat_DurHM131.jpg
  • A brown rat (Rattus norvegicus) peaking from refuse near a garbage dumpster. Portland, Oregon These rats are not native, but are european in origin and have followed human settlements around the world. Captive illustration.
    DurHM122.jpg
  • An ord's kangaroo rat (Dipodomys ordii) jumping at night. Ochoco National Forest, Oregon.
    jumping_kangaroo_rat_61607KR-1.jpg
  • European house mouse (Mus musculus).
    European_house_mouse_12206008.jpg
  • European house mice (Mus musculus) newborns in nest.
    mouse_nest_12206004.jpg
  • Orange-rumped agouti (Dasyprocta aguti). Ecuador, South America.
    Orange-rumped_agouti_12106010.jpg
  • Orange-rumped agouti (Dasyprocta aguti). Ecuador, South America.
    Orange-rumped_agouti_12106008.jpg
  • A mountain beaver (Aplodontia rufa) at its burrow. Note the fern clippings at the entrance which are a food item for mountain beavers. Mountain beavers have several common names, including aplodontia, boomer, ground bear, and giant mole. This species is the only living member of its genus, Aplodontia, and family, Aplodontiidae. It only lives in a narrow band along the West Coast of British Columbia, Washington, Oregon and California. It should not be confused with true beavers,  such as the North American beaver, to which it is not closely related.
    Mountain_Beaver_101714V2-101.jpg
  • A red tree vole (Arborimus longicaudus) sleeps in a nest made from the discarded resin ducts from Douglas-fir needles, Fresh, uneaten needle clippings are also present. Red tree voles are nocturnal and live in Douglas fir tree-tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-273.jpg
  • A red tree vole (Arborimus longicaudus) hides in a nest made from the discarded resin ducts from Douglas-fir needles; a byproduct of their diet. Fresh, uneaten fir needles are also present. Red tree voles are nocturnal and live in Douglas fir tree-tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-271.jpg
  • A red tree vole (Arborimus longicaudus) eamong discarded resin ducts from Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas-fir tree-tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-256.jpg
  • A young red tree vole (Arborimus longicaudus) travels through a passage in a nest made from the discarded resin ducts from Douglas-fir needles; a byproduct of their diet. Fresh, uneaten fir needles are also present. Red tree voles are nocturnal and live in Douglas fir tree-tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-252.jpg
  • Freshly discarded resin ducts from Douglas-fir needles. These are byproducts of red tree voles (Arborimus longicaudus) feeding on the needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-250.jpg
  • A red tre vole (Arborimus longicaudus) mom and her 30 day old offspring. Red tree voles are nocturnal and live in Douglas fir tree-tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-237.jpg
  • A red tre vole (Arborimus longicaudus) mom and her 30 day old offspring. Red tree voles are nocturnal and live in Douglas fir tree-tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-234.jpg
  • A red tre vole (Arborimus longicaudus) mom and her 30 day old offspring. Red tree voles are nocturnal and live in Douglas fir tree-tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    22514rv-229.jpg
  • Norway rat(s) (Rattus Norvegicus) emerging from a rat hole in a suburban yard at night. Portland, Oregon. © Michael Durham / www.DurmPhoto.com
    urban_rat-71412RR2-221.jpg
  • Norway rat(s) (Rattus Norvegicus) emerging from a rat hole in a suburban yard at night. Portland, Oregon. © Michael Durham / www.DurmPhoto.com
    urban_rat-71412RR-233.jpg
  • Norway rat(s) (Rattus Norvegicus) emerging from a rat hole in a suburban yard at night. Portland, Oregon. © Michael Durham / www.DurmPhoto.com
    urban_rat-71412RR-212.jpg
  • Norway rat(s) (Rattus Norvegicus) emerging from a rat hole in a suburban yard at night. Portland, Oregon. © Michael Durham / www.DurmPhoto.com
    urban_rat-71412RR2-173.jpg
  • A male red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-272.jpg
  • A male red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-257.jpg
  • A young (31day old) red tree vole (Arborimus longicaudus) eating a Douglas fir needle. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-247.jpg
  • A young (31day old) red tree vole (Arborimus longicaudus) eating a Douglas fir needle. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-246.jpg
  • A young (31day old) red tree vole (Arborimus longicaudus) eating a Douglas fir needle. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-245.jpg
  • A young (31day old) red tree vole (Arborimus longicaudus) eating a Douglas fir needle. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-242.jpg
  • A young (31day old) red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-241.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-228.jpg
  • A male red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-220.jpg
  • A male red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-219.jpg
  • A male red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-174.jpg
  • A male red tree vole (Arborimus longicaudus) eating a Douglas fir needle. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-153.jpg
  • A male red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-152.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-138.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-135.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-133.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-132.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-124.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-123.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-121.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-110.jpg
  • A female red tree vole (Arborimus longicaudus) among Douglas fir needles. Red tree voles are rarely seen. They are nocturnal and live in Douglas fir tree tops and almost never come to the forest floor.  They are one of the few animals that can persist on a diet of conifer needles which is their principle food.  As a defense mechanism, conifer trees have resin ducts in their needles that contain chemical compounds (terpenoids) that make them unpalatable to animals.  Tree voles, however, are able to strip away these resin ducts and eat the remaining portion of the conifer needle.
    Red_Tree_vole_21414rv-109.jpg
  • A family of belding ground squirrels (mother center, pups either side) stay close to their burrow on the native bunchgrass prairie habitat that is found on The Nature Conservancy's Zumwalt Prairie Preserve. The pups first emerged from their burrow the previous week.  Called locally "red diggers", they provide a food source for one of tha largest concentrations of breeding raptors in North America.
    belding_ground_squirrel-OR-MRD64-008.jpg
  • A belding ground squirrel pup nuzzles up to his mother on The Nature Conservancy's Zumwalt Prairie Preserve. The pups first emerged from their burrow the previous week. Called locally &quot;red diggers&quot;, they provide a food source for one of tha largest concentrations of breeding raptors in North America. <br />
<br />
A belding ground squirrel pup nuzzles up to his mother on The Nature Conservancy's Zumwalt Prairie Preserve. The pups first emerged from their burrow the previous week. Called locally &quot;red diggers&quot;, they provide a food source for one of tha largest concentrations of breeding raptors in North America.
    belding_ground_squirrel-OR-MRD64-007.jpg
  • A belding ground squirrel pup nuzzles up to his mother on The Nature Conservancy's Zumwalt Prairie Preserve. The pups first emerged from their burrow the previous week. Called locally &quot;red diggers&quot;, they provide a food source for one of tha largest concentrations of breeding raptors in North America.
    belding_ground_squirrel-OR-MRD64-005.jpg
  • A western gray squirrel (Sciurus griseus) jumps from a tree limb in the Dechutes National Forest, Oregon. (2 of 2)
    jumping_gray_squirrel_MDurham664_4.jpg
  • A western gray squirrel (Sciurus griseus) jumps from a tree limb in the Dechutes National Forest, Oregon.
    jumping_gray_squirrel_MDurham662_3.jpg
  • Portrait of a deer mouse (Peromyscus maniculatus), this wild mouse was held temporarily captive. Forest Park, Oregon.
    deer_mouse-MDurham292_8.jpg
  • A house mouse (Mus musculus) swimming in tanic water.
    swimming_mouse_DurhM403.jpg
  • A pair of young bushy-tailed woodrats (Neotoma cinera) get into a scrap - at night in Camp Creek Canyon in The Natuer Conservancy's Zumwalt Prairie Perserve. NE Oregon.
    playing_woodrat_DurHM244.jpg
  • A true lemming (Lemmus sibiricus) portrait. Range: Siberia to Alaska. Photographed in captivity, Summer 1997.
    true_lemming_Lemmus_sibiricus_DurHM2...jpg
  • A true lemming (Lemmus sibiricus) portrait. Range: Siberia to Alaska. Photographed in captivity, Summer 1997.
    true_lemming_Lemmus_sibiricus_DurHM2...jpg
  • A true lemming (Lemmus sibiricus) showing the unusually short tail common for this species. Range: Siberia to Alaska.
    true_lemming_Lemmus_sibiricus_DurHM2...jpg
  • A bushy-tailed woodrat (Neotoma cinera) at night in Camp Creek Canyon in The Natuer Conservancy's Zumwalt Prairie Perserve. NE Oregon.
    bushy_woodrat_night_DurHM194.jpg
  • A brown rat (Rattus norvegicus) on a street curb at night in a residential neigborhood. Portland, Oregon. These rats are not native, but are european in origin and have followed human settlements around the world.
    city_rat_DurHM143.jpg
  • A brown rat (Rattus norvegicus) scavenging in a residential garbage can. Portland, Oregon. These rats are not native, but are european in origin and have followed human settlements around the world. Captive illustration.
    garbage_city_rat_DurHM141.jpg
  • A brown rat (Rattus norvegicus) scavengin in a residential garbage can. Portland, Oregon. These rats are not native, but are european in origin and have followed human settlements around the world. Captive illustration.
    garbage_city_rat_DurHM140.jpg
  • A brown rat (Rattus norvegicus) scavengin in a residential garbage can. Portland, Oregon. These rats are not native, but are european in origin and have followed human settlements around the world. Captive illustration.
    garbage_city_rat_DurHM138.jpg
  • A brown rat (Rattus norvegicus) near a city sewer outlet. Portland, Oregon. These rats are not native, but are european in origin and have followed human settlements around the world. Captive illustration.
    sewer_rat_DurHM133.jpg
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