Tim Fitzharris / Lesser Flamingo (Phoenicopterus minor) flock flying, Lake Magadi, Kenya

Tim Fitzharris / Siberian Tiger (Panthera tigris altaica) running, native to Russia

Tim Fitzharris / Greater Flamingo (Phoenicopterus ruber) flock taking flight, Lake Bogoria, Kenya

Tim Fitzharris / Lesser Flamingo (Phoenicopterus minor) flock flying, Lake Magadi, Kenya

Ingo Arndt / Timber Wolf (Canis lupus) running in snow, Minnesota

Ingo Arndt / Grizzly Bear (Ursus arctos horribilis) chasing salmon, Lake Clark National Park, Alaska

Ingo Arndt / Grizzly Bear (Ursus arctos horribilis) cub running through shallow water, Lake Clark National Park, Alaska

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

Steve Gettle / Violet-crowned Woodnymph (Thalurania colombica) hummingbird male flying, Costa Rica

Steve Gettle / Wood Duck (Aix sponsa) male swimming, Lapeer State Game Area, Michigan

Steve Gettle / Ring-necked Duck (Aythya collaris) male flying, Island Lake Recreation Area, Michigan

Steve Gettle / Wood Duck (Aix sponsa) male flying, Lapeer State Game Area, Michigan