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Re: Homing Pigeons? Try Homing Crocodiles...
Richard W. Travsky writes:
On Fri, 28 Sep 2007, Dann Pigdon wrote:
Guy Leahy writes:
http://news.bbc.co.uk/2/hi/asia-pacific/7015561.stm Using phylogenetic
bracketing, it would seem that
homing instinct is deeply nested within archosaurs,
since both birds and crocodiles exhibit this behavior.
Either that, or the reason crocs and birds survived is because they had
this ability, while other archosaurs didn't.
Survived - what? The big impact? I'm not sure I see how a homing
ability would aid in surviving that...
Survived. Period. As opposed to being extinct (which embodies a distinct
lack of survival).
The point is that we can't assume that anything extant crocs and birds have
in common must also have been present in dinosaurs, due to the simple fact
that the former two still exist, while the latter are extinct. It may have
been the case that the surviving species managed to survive because of
adaptations they had (and still have) that dinosaurs didn't.
GIS / Archaeologist geo cities.com/dannsdinosaurs
Melbourne, Australia heretichides.soffiles.com