In article ,
Robert Green wrote:
...snipped...
Yes, windmills kill a lot of birds, but there are also a lot of birds that
DON'T fly into windmills (and windows). What will eventually happen is that
the birds that die hitting windmills will not reproduce but the ones that
live will. Eventually, the surviving birds (which now have more food and
habitat available as a result of reduced competition) will reproduce and in
general, the species will now consist of individuals that are smart enough
to avoid the hazard of windmills. Whether they do it by sound, smell, sight
or ESP doesn't matter. It's just how evolution works. Sometimes threats
are so serious that almost entire populations die out but the few remaining
individuals with resistance or avoidance abilities survive and the
population levels usually return to whatever the habitat supports. Those
individuals will pass whatever traits that enabled them to survive to their
offspring.
...snipped...
The bottom line is "survival of the fittest" and birds now have to include
"ability to avoid windmills" in their fitness.

--
Bobby G.



By that theory passenger pigeons should have evolved tha capability
to avoid hunters.


--
When the game is over, the pawn and the king are returned to the same box.

Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf. lonestar.org