[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Origin of flight in birds and bats
On Sun, Nov 13, 2011 at 5:48 PM, Dann Pigdon <firstname.lastname@example.org> wrote:
> Wouldn't that suggest that frugivorous megabats, with good eyesight and no
> echolocation, evolved
> from insectivorous cave-dwelling microbats with (presumably) small eyes and
> abilities? Surely that would require a lot of reversals in the megabats -
> unless flapping flight
> evolved twice in bats.
Why couldn't the flightless stem-bats have been arboreal rather than
cave-dwelling? Dropping is presumably similar in both cases.
T. Michael Keesey