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[OM] Re: What are the odds :-)

Subject: [OM] Re: What are the odds :-)
From: "David D Miller" <olympus-list@xxxxxxxxxxxxxxxx>
Date: Wed, 20 Aug 2008 23:25:50 +0100
> On the topic of birds in the sky, most usually Canada geese in this case,
> they often form a letter "V" formation with one arm of the V noticeably
> shorter than the other.
> 
> The question is, why is the one arm shorter than the other?

The bird flying point has the hardest job, pushing through undisturbed air
and creating a wake that others behind can fly in more easily.  The
formation needs to change leader frequently to avoid any one member of the
team getting too tired.  To change, the leader just needs to drop back very
slightly to one side - and the next bird on the other side moves forward to
take the point.  

Several such changes in the same direction will leave one side of the
formation very much shorter than the other.


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