Hadrosaur nesting strategy...(was Re: The Life of Birds- Part 2)

["Larry Febo" <larryf@capital.net>]

>Date: Tue, 27 Jul 1999 23:43:07 -0400 (EDT)
>From: John Bois <jbois@umd5.umd.edu>
>To: MKIRKALDY@aol.com
>Cc: dinosaur@usc.edu
>Subject: Re: The Life of Birds - Part 2
>Message-ID: <Pine.OSF.3.95q.990727233917.31505B-100000@poirot.umd.edu>

>(snip)

>Except that hadrosaurs could not separate themselves from their predators
>in quite the same manner, viz, by flying thousands of miles.
>I mean, colonies for hadrosaurs may have had a protective function rather
>than an isolationist one.

>Make that: a _defensive_ function rather than an isolationist one.


I always thought that birds migrated in the Spring to avoid "cold-blooded"
predators, by seeking a colder enviorn to raise their young. This strategy
of course offers little protection from warm blooded predators, but then
again, they would be fewer in number anyway, and only a few specialized as
tree climbers.

I just assumed that Hadrosaurs had the same reasons, and either migrated
north, or to higher elevations ( or a combination of both), specifically to
avoid cold-blooded egg eaters.  Was this the case?? Where did they tend to
nest. I have a copy of Horner`s "Digging Dinosaurs", but alas,....have not
yet read it...8^(