Re: pterosaurs, bats, flying theropods

[John Bois <jbois@umd5.umd.edu>]

On Fri, 20 Dec 2002, Jaime A. Headden wrote:

> For competition to occur,
> similarly both groups must have specializations to the same diet...

"Competition" is broader than diet alone!  For example,
there may be competition for nest sites; or one species may be better able
to
resist local predators and has therefore outcompeted the more heavily
preyed-upon species...and so on.