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Re: Theory of Non-Avian Dino Extinction

Matt Fraser wrote:
> Are there any extant species of reptile or, more to the point, bird that
> truly hibernate? Seems to me that if you could find such a critter, you
> would have an "in" for dino-hibernation.

Rattlesnakes hybernate.  Turtles hybernate.  Some lizards. Can't think
of any birds that do.
> Seems to me that true hibernation, and torpor for that matter, are
> mammalian capabilities.  Now some fish and amphibians can survive
> surrounded by deep mud during dry spells, but is that homologous to
> hibernation?

it's seasonal, isn't it?
At least in the case of lungfish and frogs, though some can and will
survive severe drought situations by simply prolonging their sleep. 
'course some plain ol don't wake up, either.

           Betty Cunningham  
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