Long, sexy tails not a drag on male birds

Thursday, March 12, 2009 - 10:38 in Biology & Nature

The long tails sported by many male birds in the tropics look like they're a drag to carry around and a distinct disadvantage when fleeing predators, but experiments by University of California, Berkeley, biologists shows that they exact only a minimal cost in speed or energy - at least in hummingbirds.

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