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Question -- was shaking bird trees



This brought to mind something I meant to look up before I got so lazy.

What is the smallest bird known to have lost it's flight ability? Is there a 
well-defined size threshold below which flight is rarely or never lost?

Don

--- On Fri, 6/27/08, T. Michael Keesey <keesey@gmail.com> wrote:

> From: T. Michael Keesey <keesey@gmail.com>
> Subject: Re: Shaking up the bird family tree
> To: "Dinosaur Mailing List" <dinosaur@usc.edu>
> Date: Friday, June 27, 2008, 1:16 PM
> On Fri, Jun 27, 2008 at 9:48 AM, David Marjanovic
> <david.marjanovic@gmx.at> wrote:
> >
> > Much more often among rails alone -- 2000 years ago,
> every small Pacific
> > island had its own species of flightless rail, and the
> big ones had two or
> > three, never mind the occasional flightless parrot or
> duck or ibis or...
> 
> Right, see, I knew I was missing some stuff (although I
> think I
> counted 1 for parrots and 1 for anserids).
> 
> On another note: is there a single instance in all of
> _Bilateria_ of a
> lineage losing flight and then regaining it? (Tinamous
> aside for the
> moment.)
> -- 
> T. Michael Keesey
> Director of Technology
> Exopolis, Inc.
> 2894 Rowena Avenue Ste. B
> Los Angeles, California 90039
> http://exopolis.com/
> --
> http://3lbmonkeybrain.blogspot.com/
> http://dragabok.blogspot.com/