Michael Quinton / Northern Hawk Owl (Surnia ulula) pair at nest, Alaska

Michael Quinton / Northern Hawk Owl (Surnia ulula) peering from nest, Alaska

Michael Quinton / Northern Hawk Owl (Surnia ulula) parent with chicks at nest, Alaska

Michael Quinton / Snowshoe Hare (Lepus americanus) browsing on a Pussy Willow (Salix discolor) twig in winter, Alaska

Michael Quinton / Snowshoe Hare (Lepus americanus) browsing on a Pussy Willow (Salix discolor) twig in winter, Alaska

Michael Quinton / Snowshoe Hare (Lepus americanus) browsing on a Pussy Willow (Salix discolor) twig in winter, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) carrying fecal sac from nest cavity in forest, Alaska

Michael Quinton / Steller's Sea Lion (Eumetopias jubatus) with Pink Salmon (Oncorhynchus gorbuscha) prey, Alaska

Michael Quinton / American Marten (Martes americana) emerging from tree cavity, Alaska

Michael Quinton / American Marten (Martes americana) sleeping in tree cavity, Alaska

Michael Quinton / Dall's Sheep (Ovis dalli) ram, lamb, and ewe, Yukon Territory, Canada

Michael Quinton / Northern Flicker (Colaptes auratus) at nest cavity with chicks, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) parent at nest cavity with chick, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) chicks in nest cavity ready to fledge, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) chicks in nest cavity ready to fledge, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) chick in nest cavity ready to fledge, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) entering nest cavity with chicks, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) chicks in nest cavity ready to fledge, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) entering nest cavity with begging chicks, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) parent brooding chicks in nest cavity, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) at nest cavity with begging chicks, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) leaving nest cavity in forest, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) eggs in nest cavity, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) leaving nest cavity in forest, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) at nest cavity, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) at nest cavity, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) clinging to tree trunk, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) in nest cavity, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) in nest cavity, Alaska

Michael Quinton / Northern Flicker (Colaptes auratus) in nest cavity, Alaska

Michael Quinton / Caribou (Rangifer tarandus) pair running in snow, Alaska

Michael Quinton / Red Fox (Vulpes vulpes) walking in snow, Alaska

Michael Quinton / Crab Spider (Diaea dorsata) camouflaged on yellow flower, Alaska

Michael Quinton / Trumpeter Swan (Cygnus buccinator) pair on lake at sunset, North America

Michael Quinton / Great Gray Owl (Strix nebulosa) parent protecting eggs in nest, North America

Michael Quinton / Great Gray Owl (Strix nebulosa) incubating eggs on nest, North America

Michael Quinton / Ruffed Grouse (Bonasa umbellus) male in courtship display, North America

Michael Quinton / Chinook Salmon (Oncorhynchus tshawytscha) swimming up river to spawn, Alaska

Michael Quinton / Red-necked Grebe (Podiceps grisegena) parent on nest with eggs in boreal pond, Alaska

Michael Quinton / American Beaver (Castor canadensis) slapping water with tail in boreal pond, Alaska

Michael Quinton / American Beaver (Castor canadensis) nibbling on leaf from willow branch in boreal pond, Alaska

Michael Quinton / Pine Grosbeak (Pinicola enucleator) male, perched atop tree, Alaska

Michael Quinton / Steaming pool in winter, Mammoth Hot Springs, Yellowstone National Park, Wyoming

Michael Quinton / Bald Eagle (Haliaeetus leucocephalus) returning to nest with food for chicks, Alaska

Michael Quinton / Crab Spider (Thomisidae) camouflaged on flower, Alaska

Michael Quinton / Trumpeter Swan (Cygnus buccinator) pair on lake, Copper River Delta, Alaska

Michael Quinton / Tundra Vole (Microtus oeconomus) in autumn foliage, Alaska

Michael Quinton / Alaska Moose (Alces alces gigas) feeding on Fireweed (Chamerion angustifolium) flowers in spring, Alaska