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Flightless birds more common globally before human-driven extinctions

Source: ucl.ac.uk

There would be at least four times as many flightless bird species on Earth today if it were not for human influences, finds a study led by UCL researchers.

The study, published in Science Advances, finds that flightlessness evolved much more frequently among birds than would be expected if you only looked at current species.

Researchers say their findings show how human-driven extinctions have biased our understanding of evolution. MORE

Header image: UCL.