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- Birds at your feeder, a guide to feeding habits, behavior, distribution, and abundance, Erica H. Dunn and Diane L. Tessaglia-Hymes ; illustrations by Peter Burke ; abundance maps by Jeffrey Price ; summarizing data from Project FeederWatch, a continent-wide survey sponsored by Cornell Laboratory of Ornithology, Bird Studies Canada, National Audubon Society, and the Canadian Nature Federation
- Birds at your feeder, a guide to feeding habits, behavior, distribution, and abundance, Erica H. Dunn and Diane L. Tessaglia-Hymes ; illustrations by Peter Burke ; abundance maps by Jeffrey Price