Every year, billions of birds take to the skies, responding to changing seasons, navigating to breeding sites or escaping the cold of winter. The newest edition of BirdLife International’s State of the World’s Birds report says 45% of migratory bird species are in decline — 11% are threatened with extinction, the authors write. Launched at the Global Flyways Summit in Nairobi, Kenya, on Sept. 11, the report is the first to focus on migratory birds. Migratory birds are sensitive indicators of wider ecosystem health, the report’s lead author Lucy Haskell, senior science officer at BirdLife, told Mongabay in an interview. They play a vital role in connecting ecosystems, cultures and people. “This report is about migratory birds, but it also serves as a warning about the state of the planet in general,” she said. Invasive species, agricultural expansion, climate change, residential and commercial development and hunting are major threats facing multiple species across the globe. The report found that seabirds and shorebirds are particularly threatened, while species that depend on marine habitats, forests and coastal wetlands are also increasingly imperiled. An Egyptian vulture in Spain. This species’ ongoing recovery is an example of how concerted conservation action can have a positive impact, experts say. Image © Lars Petersson. Last year, the IUCN, the global wildlife conservation authority, officially confirmed the extinction of the slender-bill curlew, last seen in Morocco in 1995. It’s a poignant example of the pressures facing birds the world over, the experts say. Seven other migratory avian…This article was originally published on Mongabay

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