How Owls swivel their heads - without passing out

To:	Birding-Aus Aus <>
Subject:	How Owls swivel their heads - without passing out
From:	Carl Clifford <>
Date:	Sat, 2 Feb 2013 13:24:17 +1100

Researchers have been examining the mechanics of how Owls can turn their heads 
as much as 270 degrees without their carotid and vertebral arteries being 
twisted closed and causing Owls to literally fall off their perches.
http://www.bbc.co.uk/news/science-environment-21279609

Cheers,

Carl Clifford
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