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One HOW TO BEGIN BIRD STUDY
Two THE LURE OF MIGRATION WATCHING
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adult American bird Audubon Society average beginner behavior bird banders bird banding bird books Bird Club bird migration bird songs bird students bird study bird watching black-headed gull breeding birds broad-wings Broley census chimney swift chipping sparrows coast colony color plates cycle density ducks eagles eggs England feeding female field Fish and Wildlife fledglings flight line flock foraging forest gulls habitats hawks herons Hooded warbler interesting Kittiwake large numbers Long Island males maps marsh Massachusetts Midtoe migration watching miles Museum naturalists nesting birds North American northern numbers numbers of birds observations Ohio once Ornithological Club ornithologists pair period plumage population prairie recorded Red-eyed vireo Red-wings region reported robins roost ruffed grouse sandpiper seen singing perches snowy owl song sparrow species starlings study area Table terns territory tion trapping trees Urner warbler watchers Wildlife Service winter woodland woodpecker wren yards York young birds