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Challenge Question #8
Paul Cherubini (paulcher@concentric.net)
Mon, 06 Apr 1998 19:25:34 +0000
My experience has been that approximately 20-30 minutes after sunset,
monarch butterflies will not fly no matter how warm and calm field
conditions may be.
If, on a warm, calm, full moonlit night, the butterflies are shaken from
a roost or tossed into the air the butterflies soon crash into into
nearby objects or the ground - they do not seem to be physically capable
of "seeing" and maintaining oriented flight back to nearby trees.
Therefore, I am highly skeptical of the concept that monarch butterflies
might be capable of remaining air borne at night and in this way,
possibly cross the Atlantic ocean or Gulf of Mexico. I believe
trans-oceanic journeys are possible only if the butterflies are lucky
enough to find and stay with a ship, or hotscotch from one oil drilling
platform (or land island) to another. Keeping up with a ship is actually
more difficult for the butterflies than it might sound because modern
ships move at roughly 20-30 mph and this creates gusty, turbulent winds
on the deck.
Paul Cherubini
paulcher@concentric.net
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