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Re: Bobbing head...
- To: "Armstrong, Craig" <CraigArmstrong@PerformanceInc.com>, "carolinabirds@duke.edu"<carolinabirds@duke.edu>
- Subject: Re: Bobbing head...
- From: Clyde Sorenson <clyde_sorenson@ncsu.edu>
- Date: Fri, 12 Jul 2002 13:41:47 -0400
- References: <624C1119C6F9D3118C4A009027C2318101196742@PRFEXC>
- Sender: carolinabirds-owner@acpub.duke.edu
- User-agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en-US; rv:1.0rc2) Gecko/20020512 Netscape/7.0b1
Craig and all,
If you carefully watch a dove (or others that "bob") walking, you'll
notice that what it actually does is hold its head motionless in place
while it moves its body forward, then very rapidly snaps its head
forward to "catch up" with its body. This way, its head remains
motionless a much higher percentage of the time than it would if it
simply went along for the ride. Why should this be advantageous?
Motionless eyes can detect potential dangers far better than eyes on
the move.
Take care,
Clyde Sorenson
Clayton and Raleigh, NC
Armstrong, Craig wrote:
>Does anyone have any info on why some birds 'bob' their heads when they
>walk, like the Mourning Doves do?
>
>Thanks, Craig Armstrong / Chapel Hill
>
>
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