![Christmas Bird Count. Camilla Cerea/National Audubon Society](https://media.audubon.org/Camilla_Cerea_CBC_4.jpg?width=233&height=200&auto=webp&quality=10&fit=crop&disable=upscale&enable=upscale&blur=100)
Thirty Percent of North American Bird Species Face Decline Across Seasons
May 28, 2016 —
Two new studies strike similar conclusions on continental bird populations during winter and spring.
Erica Cirino is a freelance science writer based in New York. She covers wildlife and the environment, and specializes in biology, conservation, and policy.