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Global and North American migratory bird declines

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2026-08-22 14:00 UTC → 2026-09-11 22:05 UTC · added removed

Global migratory bird populations are facing significant declines, with an estimated continue to face severe declines. While previous estimates suggested 51% of the approximately 1,800 migratory species were experiencing population losses. The International Union for Conservation losses, the ‘State of Nature (IUCN) reports the World’s Birds 2026’ report by BirdLife International indicates that 43 45% of the world’s 1,843 migratory species are currently in decline. The report warns that one in nine migratory species is threatened with extinction, with 200 species (11%) at risk and 32 classified as critically endangered, primarily due to habitat endangered. Habitat loss and degradation, which accounts degradation remain the primary drivers, accounting for 65% of the risk for these critically endangered species. Other contributing factors include climate change, invasive species, overhunting, In the East Asian-Australasian Flyway, 53% of species are declining, and industrial fishing accidents. 58% of the habitats used for breeding, feeding, and resting are categorized as being in ‘poor or very poor condition’. Marine and coastal species are particularly vulnerable, with 54% of migratory shorebirds and 49% of migratory seabirds experiencing declines. Regional threats vary, such as persist, including trapping in East Asian and Australian routes and building collisions or domestic cat predation in North America. routes, which affects 47% of terrestrial bird species. In the United States specifically, data indicates a massive decline of nearly 3 billion birds since 1970, representing roughly one in every four birds. This includes 112 ‘Tipping Point’ species that have lost more than half their populations over the last 50 years, and Canada, collisions with grassland high-rise buildings and aridland species seeing losses exceeding 40 percent. These declines are driven predation by habitat loss, pesticides, and domestic cats result in over one billion bird fatalities annually. Other contributing factors include climate change, resulting invasive species, overhunting, and agricultural expansion. The recent official extinction of the Slender-billed Curlew in reduced birdsong diversity 2025 highlights the ongoing biodiversity loss. In response to these trends, various governments and volume. organizations signed the ‘Nairobi Flyways Declaration’ to commit to protecting vital migratory routes.

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  1. 2026-09-11 22:05 UTC Global and North American migratory bird declines
  2. 2026-08-22 14:00 UTC Global and North American migratory bird declines

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