Related by context. Frequent words. (Click for all words.) 62 grassland birds 61 wetland habitat 61 aquatic habitats 60 aquatic ecosystem 60 grassland habitat 60 wetland ecosystems 59 amphibian populations 59 aquatic ecosystems 59 freshwater ecosystems 59 waterbirds 58 Everglades ecosystem 58 wetland habitats 57 avian species 57 wildlife habitats 56 forest ecosystems 56 Invasive plants 56 migratory waterfowl 56 sagebrush habitat 55 habitat 55 coastal ecosystems 55 biodiversity hotspot 55 invasive insect 55 migrating waterfowl 55 bird species 55 species 55 waterfowl habitat 55 nesting habitat 55 habitats 54 bee populations 54 ecosystems 54 freshwater mussels 54 wood stork 54 deciduous forests 54 nesting pairs 54 biodiversity 54 caribou herds 54 habitat fragmentation 54 Sea otters 53 woodland caribou 53 aquatic habitat 53 amphibian species 53 terrestrial ecosystems 53 species extinctions 53 Yellowstone ecosystem 53 wading birds 53 wildlife habitat 53 seagrasses 52 mussel species 52 wetlands 52 forested wetlands 52 Soil erosion 52 spotted owl habitat 52 northern spotted owls 52 riparian habitat 52 marbled murrelet 52 bald eagle nests 52 insect populations 52 Boreal forest 52 federally endangered species 52 hemlock woolly adelgid 52 native brook trout 52 grasslands 52 mountain caribou 52 migratory bird 51 biota 51 aquatic species 51 wintering birds 51 honeybee population 51 ocean ecosystems 51 caribou herd 51 Bighorn sheep 51 piping plover 51 tidal marshes 51 Mexican spotted owl 51 eagle nests 51 greater sage grouse 51 waterfowl 51 toxic algae blooms 51 bird migrations 51 wildlife 51 mountain pine beetles 51 elk herds 51 lapwings 51 caribou habitat 51 lapwing 51 federally endangered 50 lowland forests 50 keystone species 50 red cockaded woodpecker 50 White Nose Syndrome 50 overhunting 50 seagrass beds 50 prairie chicken 50 Invasive species 50 freshwater fisheries 50 deer herds 50 migratory birds 50 freshwater wetlands 50 Sage grouse 50 marine ecosystems 50 red legged frogs