Birds Aren’t Just Declining. They’re Declining Faster, a New Study Finds.

Birds in the United States are not only declining, but they are declining faster, especially in areas with intensive agriculture, according to new research. Overall drops in bird population, measured from 1987 to 2021, were sharpest in warm and warming areas, suggesting that climate change may play a role.

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. “What we found is that any metric of agricultural intensity was always the best predictor of acceleration of the decline.”