By outfitting blackbirds with heart-rate monitors, scientists debunked a long-held assumption about the benefits of spending the winter in warm climates. By outfitting blackbirds with heart-rate monitors, scientists debunked a long-held assumption about the benefits of spending the winter in warm climates. your-feed-science, your-feed-animals, Animal Migration, Energy Efficiency, Birds, Nature Ecology & Evolution (Journal), Germany NYT > Science
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