US EditionSatellites reveal why cuckoo birds are disappearing
- Wilfrid, the first cuckoo to return to the UK this year, arrived in Suffolk on April 22 after migrating from northern Angola via Spain.
- The British Trust for Ornithology launched the Cuckoo Tracking Project in 2011 to study cuckoo migration and causes of population decline.
- Satellite tracking shows cuckoos undertake a massive 7,000 km journey to central Africa using two routes: via Spain or Italy, with differing survival rates.
- Researchers found birds migrating via Spain face higher mortality, especially in drought and wildfire years, partly due to conditions in Spain and the UK, and being eaten by humans.
- The difference in survival rates linked to migration routes and threats along the journey appears to contribute significantly to the ongoing cuckoo population decline.
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Leaning Left2Leaning Right3Center4Last UpdatedBias Distribution44% Center
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R 33%
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