Related by context. Frequent words. (Click for all words.) 59 marbled murrelet 58 Endangered Species List 56 endangered species 53 species 53 black footed ferret 53 Sage grouse 52 Endangered Species Act 52 wolf populations 52 overhunting 52 whitebark pine 51 polar bears 51 Endangered species 51 Grizzly bears 50 grizzly bears 50 imperiled species 50 greater sage grouse 50 caribou herd 50 endangered species protections 50 gray wolf 50 woodland caribou 50 gray wolves 49 California condors 49 lynx 49 black tailed prairie 49 endangered 49 grizzlies 49 Pacific walrus 49 sea otters 48 polar bear habitat 48 bull trout 48 habitat 48 Steller sea lions 47 Servheen 47 northern spotted owl 47 loggerhead sea turtles 47 caribou 46 spotted owls 46 wolverines 46 wolves 46 habitat fragmentation 46 Bluefin tuna 46 sage grouse 46 critically endangered species 46 ocean ecosystems 46 IUCN Red 46 ecosystems 45 Overfishing 45 Mexican gray wolves 45 spotted owl 45 habitat designation 45 habitat degradation 45 FWS 45 Mexican gray wolf 45 polar bear 44 bighorn 44 Bald eagles 44 Donald Molloy 44 habitats 44 sawfish 44 black footed ferrets 44 carnivores 44 vertebrate species 44 Atlantic bluefin tuna 44 Threatened Species 44 keystone species 44 overharvesting 44 wolf 43 marten 43 wild salmon 43 Delta smelt 43 mammals 43 endangered salmon 43 sea otter 43 trumpeter swan 43 bee populations 43 overfished 43 delta smelt 43 Atlantic bluefin 43 Endangered Species 43 kakapo 43 Wildlife Service 43 blue fin tuna 43 elk herds 43 bluefin tuna 43 Yellowstone bison 43 overfishing 43 Polar bears 42 grizzly bear 42 forest ecosystems 42 otters 42 USFWS 42 burrowing owl 42 gray squirrel 42 penguin species 42 mountain pine beetles 42 waterbirds 42 wildlife biologists 42 trumpeter swans 42 biota 42 lesser prairie 42 Chinook salmon