Bird losses are accelerating across North America, particularly in farming regions where agriculture is most intensive

A new study published in *Science* reports that bird population declines across North America are accelerating, particularly in regions with intensive agriculture. Researchers analyzed data from the North American Breeding Bird Survey (1987-2021) for 261 species, finding an average 15% decline and an increased rate of loss in areas like the Midwest, California, and parts of the Mid-Atlantic. These regions are characterized by high agricultural intensity, including extensive cropland, fertilizer use, and pesticide application. The study suggests that modern agricultural practices, which transform landscapes and reduce food sources, contribute to these accelerating declines. This research highlights the ongoing impact of human activity on avian biodiversity, indicating a worsening trend for bird populations.