David Williams wrote,
"...from a lurker on the digest and former wildlife biologist
(beginnings of a bio there)....the 'V's that migrating birds form
create a lift/drag advantage for the for the folks behind the leader
(see www.nascar.com).
The aerodynamics are affected by wind direction etc. so the 'V's will
vary from symmetrical to asymmetrical depending on the relative
direction of any headwind. They aren't always skewed "
This reminded me of a joke that has been known to cause severe pain:
"When birds fly in the V-pattern, why is one side longer than the
other?" - Because there are more birds on that side.
|