> But why was it the females and not the males which took advantage of larger
> prey? And why are *all* or nearly all raptor females larger? If morphology
> reflects, among other things, adaptation to environmental constraints, given
> the huge range of habitat-types with raptors in them, surely at least one
> raptor species would have found it advantageous for males to be larger? So
> the question as well is why is large female/small male dimorphism *so*
> general among predatory birds?

Well, just an idea, but perhaps larger females can lay larger eggs, which might
be a big advantage.

== Michael Hobbs
== Kirkland WA
== hummer at isomedia.com