On the threshold of flight
10,000 Birds
JANUARY 20, 2015
Flight has evolved multiple times; it has emerged in lizards, snakes, fish, bats, maybe bats again, distant relatives of primates, regular primates, rodents, and a few other unlikely taxa, in a rather half baked fashion, not “true” flight. Science 12 December 2014: 346 (6215), 1253293 [DOI:10.1126/science.1253293].
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