What about the possibility of small theropods evolving to eat fish, bugs and small invertebrates that live along shore lines. I drew a creature that would be specialized to do such a thing, how plausible to you think it would be? I plan on elaborating on this .....
here it is
http://www.dansjp3page.com/hosting/burgess/ibisdromeo.JPG
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Stacey Burgess Corona Borealis Paleozone