Up to 900 species of tropical land birds around the world could become extinct by 2100, researchers say.
The finding is modelled on the effects of a 3.5C Earth surface temperature rise, a Biological Conservation Journal paper shows.
Species may struggle to adapt to habitat loss and extreme weather events, author Cagan Sekercioglu says.
Mountain, coastal, restricted-range, and species unable to get to higher elevations could be the worst affected.
Birds at risk:
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http://www.bbc.co.uk/nature/17212765