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Re: Origin of bird flight: ontogenetic-transitional wing (OTW) hypothesis



No extant avian uses its forelimbs to catch prey, because these forms already have the forelimbs highly modified into wings; or else they are flightless birds that evolved from forms that had the forelimbs highly modified into wings.

"The present is not the key to the past. The past is the key to the present, and to the future."