Related by context. Frequent words. (Click for all words.) 58 Greater Yellowstone Ecosystem 58 buffalo herds 57 pronghorns 57 calving grounds 57 migratory habits 56 caribou herds 56 caribou herd 56 Sea otters 56 elk bison 55 sage grouse populations 55 pygmy rabbits 54 caribou 54 Trumpeter swans 54 Bighorn sheep 54 musk oxen 54 Mule deer 53 coniferous forests 53 wolves roam 53 Seward Peninsula 53 Pribilofs 53 snowy plovers 53 Arctic foxes 53 elk calves 53 migratory paths 53 herds 53 bison herds 53 migratory bird species 52 musk ox 52 Book Cliffs 52 pocket gophers 52 eiders 52 Selkirk Mountains 52 Sandhill cranes 52 wintering grounds 52 grassy plains 52 saiga 52 subarctic 51 cottontail rabbits 51 ponderosa pine forest 51 Alaska 51 Unimak Island 51 subsistence hunters 51 penguin colonies 50 tundra swan 50 bobwhites 50 ptarmigan 50 Yukon Kuskokwim Delta 50 ungulates 50 red legged frogs 50 Aleutian chain 50 overhunting 50 Bighorn Mountains 50 marbled murrelets 50 alpine tundra 50 reindeer herders 50 tule elk 50 elk herds 50 caribou populations 50 northern spotted owls 50 goshawks 50 refugia 50 grizzly bears 50 sagebrush habitat 50 elk herd 50 Steller sea lion 50 Bighorn Basin 50 prairie potholes 50 Migrating birds 49 rookeries 49 southcentral Alaska 49 harp seal population 49 Canada Sedimentary Basin 49 conifer forests 49 pheasant populations 49 bears mountain lions 49 Rocky Mountains 49 wintering birds 49 deciduous forests 49 elk moose 49 migratory patterns 49 Rocky Mountain elk 49 timber rattlesnake 49 yellow legged frogs 49 redpolls 49 godwits 49 Beluga whales 49 Siberia 49 walruses 48 waterbird 48 herd 48 Bitterroot Mountains 48 bioregion 48 Bottlenose dolphins 48 highlands 48 Piedras Blancas 48 temperate rainforest 48 red cedars 48 denning 48 Canadian sedimentary basin 48 snowshoe hares 48 Sandhill Cranes