More than half of Earth’s migratory bird species are declining – here’s how we can still save them
By Peter Marra, Dean of The Earth Commons, Professor of Biology and the Environment, Georgetown University
Nathan W. Cooper, Research Ecologist, Smithsonian Institution
A new global assessment of the world’s migratory species finds reason for alarm, but also hope – and a road map for helping them survive.
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Wednesday, July 22, 2026