Related by context. Frequent words. (Click for all words.) 60 migratory routes 56 migratory route 55 migratory 55 habitats 52 habitat 52 leatherbacks 52 wintering grounds 52 calving grounds 50 rookeries 50 genetic diversity 49 avian species 49 species 48 waterbirds 48 bird species 48 migratory species 48 pronghorns 47 migrating birds 47 wintering 47 nesting grounds 47 leatherback turtles 47 habitat fragmentation 47 aquatic habitats 47 mating habits 46 insect populations 46 shorebirds 46 ecology 46 mammals 46 reproductive biology 46 sea turtle nesting 46 terrestrial ecosystems 46 birdlife 46 aquatic insects 45 mating rituals 45 transect 45 plovers 45 genetic variability 45 migratory birds 45 ocean currents 45 ornithology 45 Migratory birds 45 spawning grounds 45 foraging 45 migratory waterfowl 45 megafauna 45 seagrass beds 44 nesting habitat 44 breeding colony 44 wading birds 44 keystone species 44 overhunting 44 petrels 44 Migratory 44 patterns 44 flyways 44 marine ecosystem 44 aerial surveys 44 snowy owls 43 migrating waterfowl 43 puffins 43 temperature salinity 43 fauna 43 nesting birds 43 biodiversity 43 blue winged teal 43 flyway 43 molting 43 populations 43 habitat degradation 43 spawning salmon 43 aquatic ecosystem 43 wildlife 43 temperate regions 43 Ornithologists 43 ptarmigan 43 harmful algal blooms 43 marine ecosystems 42 damselflies 42 nesting 42 migrations 42 songbirds 42 nocturnal animals 42 phylogeny 42 nocturnal creatures 42 mammalian species 42 biota 42 birds 42 continental drift 42 extinctions 42 genetic makeup 42 flora fauna 42 Monarch butterflies 42 freshwater ecosystems 42 shorebird 42 ungulates 42 zooplankton 42 marten 42 musk oxen 41 plover 41 wetland habitats 41 intertidal 41 molt