A silent crisis is unfolding across the skies of North America. Once-crowded dawn choruses are fading as billions of birds vanish, their ancient migratory patterns unravelled by climate disruption, habitat loss, and shifting seasonal cues.
Scientists warn this collapse may be an omen for the planet itself. Since 1970, the continent has lost nearly 3 billion breeding adult birds, a 29 per cent decline, according to a landmark study by the Cornell Lab of Ornithology. Now, new data suggest that climate change is accelerating this downward spiral — altering migration routes and endangering species once thought to be resilient.
