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Bald Eagle, illustration from a published book
Banana, water lily, photograph from the Bulletin of the Department of Agriculture
Banana, water lily, range of, diagram from a book
Barn Swallow, food of young and adults, illustration from the Yearbook of the Department of Agriculture
Bird map of Minnesota, printed map from the Review of the Ornithology of Minnesota
Black and white Warbler, male and female, illustration from Frank M. Chapman, "The Warblers of North America"
Blackbird, Crow, Grackle, food diagrams from the Yearbook of the Department of Agriculture
Blackpoll Warbler, male and female, image from Frank M. Chapman, "The Warblers of North America"
Bluebird, food diagram, old and young
Blue Jay, food diagram