Related by context. Frequent words. (Click for all words.) 56 endemic species 55 migratory bird populations 55 wintering habitat 54 foraging habitat 54 grassland habitat 53 whitebark pine trees 53 habitats 53 lowland forests 52 streambanks 52 murrelet 52 upland habitat 52 habitat 52 fir forests 52 tigers leopards 51 elk bison 51 Invasive plants 51 wildlife habitats 51 nesting habitats 51 wetland ecosystem 51 insectivores 51 wintering waterfowl 51 insect eaters 51 short eared owls 51 frogs salamanders 50 goshawks 50 capercaillie 50 sagebrush habitat 50 marbled murrelets 50 coniferous forests 50 aspen stands 50 eelgrass beds 50 refugia 49 lowland forest 49 Spider mites 49 murrelets 49 aquatic habitats 49 reedbeds 49 pollinating insects 49 seabird populations 49 Nonnative 49 nesting habitat 49 freshwater habitats 49 seagrass meadows 49 Captive breeding 49 avian species 49 deciduous forests 49 Barn owls 48 biodiversity hotspot 48 Migrating birds 48 wetland ecosystems 48 grizzly habitat 48 parasitic wasp 48 pocket gophers 48 cattle feedlots 48 red shouldered hawks 48 red legged frogs 48 staghorn coral 48 mussel beds 48 longleaf pine forests 48 coastal sage scrub 48 forbs 48 shrubland 48 salt licks 48 Stink bugs 48 sage grouse populations 47 delicate ecosystems 47 Sea otters 47 wildlife 47 Antarctic krill 47 Migratory birds 47 spider mite 47 wetland habitats 47 eiders 47 skuas 47 woody vegetation 47 wildlife corridors 47 Feral pigs 47 migratory bird species 47 Coral reef 47 Amazonian rainforest 47 overharvested 47 dormice 47 elk moose 47 tidal marshes 47 Everglades ecosystem 47 bird nests 47 roseate spoonbills 47 northern spotted owls 47 pine martens 47 grazing pastures 47 birdlife 47 mountain plover 47 song thrush 46 rookeries 46 arctic foxes 46 Argentine ant 46 aspen groves 46 kangaroo rats 46 yellow legged frogs 46 migrating songbirds 46 bog turtles