Related by context. Frequent words. (Click for all words.) 54 Uinta Basin 53 Book Cliffs 53 pronghorns 53 paleontological 53 Bridger Teton 50 Wind Cave 50 bison herds 50 rangelands 50 Medicine Bow 49 Pinedale 49 overgrazed 49 grasslands 48 rangeland 48 Big Thicket 48 sage grouse habitat 48 pronghorn 48 caribou herds 48 forbs 48 black footed ferrets 48 Yellowstone ecosystem 47 geologic formations 47 Chaco Canyon 47 Piceance 47 elk herd 47 Chihuahuan Desert 47 Paleocene 47 elk herds 47 Monument Butte 47 prairie chickens 47 ranching 47 elk 47 greater sage grouse 47 Lodgepole 46 mountain pine beetles 46 Big Piney 46 paleontology 46 Guadalupe Mountains 46 Rocky Mountain Front 46 Anticline 46 National Elk Refuge 46 mule deer 46 Pinedale Anticline 46 desert bighorn sheep 46 Lassen Volcanic National 46 Wyoming 46 Malheur 46 tallgrass prairie 46 sagebrush 46 grassland birds 46 Arctic tundra 46 sharp tailed grouse 46 Grasslands 46 alpine lakes 46 marine reptiles 46 aspen 46 migrating waterfowl 45 Jemez Mountains 45 Meeteetse 45 sage grouse 45 Carrizo Plain 45 geologic 45 Rattlesnake Hills 45 Gros Ventre 45 cottonwoods 45 ptarmigan 45 Pleistocene 45 Late Cretaceous 45 farms ranches 45 geology 45 black footed ferret 45 Kreil 45 Yampa River 44 terrestrial ecosystems 44 pikas 44 cattle grazing 44 headwater 44 bison herd 44 Niobrara 44 chukar 44 wildlife ecologist 44 avian species 44 prairie chicken 44 arid regions 44 musk oxen 44 Sage grouse 44 ungulates 44 Grassland 44 Twin Buttes 44 hardwood forests 44 Poinar 44 aspens 44 Yellowstone 44 bighorn sheep 44 bighorn 44 Flaming Gorge 44 habitat fragmentation 43 geological formations 43 Calving 43 leks 43 Shoshone 43 Amazon basin