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Re: Mesozoic birds made insects shrink



One effect of the evolution of bats that seems to have nothing to do with birds 
is their effect on the flowering of certain plants. There are certainly a large 
number of night-flowering plants pollinated by bats. I am unaware of any 
nocturnal bird that pollinates night-flowering plants - of course there could 
have been at some point in the past but I suspect that the evolution of bat 
pollination (though the plants involved may have been originally pollinated by 
insects or small nocturnal mammals such as the living Tarsipes of Australia) 
had nothing to do with birds. 

I suppose, though, that a bird-pollinated plant flowering by day could have 
'switched' to night flowering to take advantage of nectarivorous bats - but I 
csn't think of a likely example. 

Ronald Orenstein 
1825 Shady Creek Court
Mississauga, ON
Canada L5L 3W2

On 2012-06-05, at 4:53 PM, Mike Keesey <keesey@gmail.com> wrote:

> On Tue, Jun 5, 2012 at 12:46 PM,  <tyazbeck@comcast.net> wrote:
>> I'll look up the take-off and landing info later. What about the speed of 
>> flight in pter. compared to birds? I don't doubt that they were 
>> warm-blooded, but it seems that pterosaurs would be less agile in flight, 
>> and very voulnerable on the ground. Wouldn't feathers be better (more 
>> durable?) than skin? Wouldn't a pterosaur with a torn wing be SCREWED, i.e. 
>> theropod bait? Still, I suspect that the advancement of birds would cause at 
>> least a few problems for the flying reptiles.
> 
> Is there much data on how a torn wing affects bat flight? Seems they'd
> have the same problem.
> 
> It may be true that pterosaurs were less adept on the ground than
> birds, since the hindlimbs are neither cursorial nor decoupled. More
> like bats in that regard.
> 
> How well do we understand what the evolution of bats meant for birds?
> -- 
> T. Michael Keesey
> http://tmkeesey.net/