[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Hadrosaur nesting strategy...(was Re: The Life of Birds- Pa
--- Dann Pigdon <email@example.com> wrote:
> Not always so. Whales don't head towards polar
> regions to avoid
> predators, but to take advantage of the much richer
> food reserves.
> In fact, if new-born whales were able to withstand
> polar conditions
> from birth whales would probably never leave the
> polar regions.
> Adult whales hardly eat anything (sometimes nothing
> at all) while
> breeding in warmer waters.
This demonstrates a problem with analogy.
Let's not forget that whales live in the sea, and that
the same abundance of resources may not be available
at the terrestrial (or at least iced-over) Poles.
Even within the example there are evident problems.
"Abundance" is relative. Sperms whales take larger
prey than the other Great Whales, and feed throughout
There may be a lesson here in analogizing birds and
non-avian dinosaurs. There are, of course,
substantial differences between a hadrosaur and a
Even careful analogy is, in the end, only analogy.
"I've been ionized, but I'm okay now."
Do You Yahoo!?
Free instant messaging and more at http://messenger.yahoo.com