Related by context. Frequent words. (Click for all words.) 58 Migrating birds 54 northward migration 54 wintering birds 54 plague proportions 54 migrating ducks 53 migrating shorebirds 53 Sea otters 52 southward migration 52 migratory shorebirds 52 migrating waterfowl 52 wintering habitat 51 avian influenza outbreaks 51 hawks eagles 50 bird migrations 50 skunks raccoons 50 elk bison 50 migratory routes 50 squirrels rabbits 50 seabird populations 50 Migratory birds 50 Snow leopards 50 Barn owls 50 voracious predators 50 snow buntings 49 grazing pastures 49 wintering waterfowl 49 frogs salamanders 49 godwits 49 herons egrets 49 redpolls 49 newborn lambs 49 migratory paths 49 forage 49 short eared owls 49 pine martens 49 refugia 49 waxwings 49 eiders 49 penguin colonies 49 Spider mites 49 temperate zones 49 population densities 48 Feral pigs 48 biting midges 48 sicken humans 48 chicks hatch 48 overharvested 48 migratory habits 48 Hector dolphins 48 endemic species 48 insect eaters 48 waterbirds 48 migratory bird species 48 Bottlenose dolphins 48 sparse vegetation 48 aphid populations 48 waterbird 48 overwintered 48 playa lakes 47 larval stages 47 cottontail rabbits 47 elephants giraffes 47 flyways 47 leatherback sea turtles 47 bees pollinate 47 overharvest 47 curlews 47 flocks 47 kittiwakes 47 insectivores 47 frogs turtles 47 lush pastures 47 desert locust 47 tent caterpillars 47 moulting 47 Stink bugs 47 Arctic terns 47 owls hawks 47 Cheyenne Bottoms 47 avocets 47 subtropical climate 47 backyard bird feeders 47 temperate regions 47 waterholes 47 intensively farmed 46 ecoregions 46 migratory bird populations 46 moose elk 46 bluetongue virus 46 alligators snakes 46 mud snail 46 elk moose 46 amphipods 46 wintering 46 pasture grasses 46 Opossums 46 foxes coyotes 46 sargassum 46 milder winters 46 voracious eaters 46 Sandhill cranes