Subject: Re: Synchronized diving Date: Dec 7 21:16:47 1998 From: Michael Price - mprice at mindlink.bc.ca
Just had a thought about unison diving in seabirds. It's unison to us, but is it to the birds?
Consider: a flock of thousands of small Calidris being pursued by a falcon seems to twist and turn as one entity, but super slo-mo video shows thousands of different idividuals making decisions to turn in one direction or another in three dimensions at slightly different times to each other as each attempts to move in such a way as to interpose a neighbor between itself and the incoming raptor. The difference in perception (and to the historic misapperceptions such as a 'Group Mind' controlling the flock's actions) is in the difference between these birds' and humans' sense of time: we were simply watching them too slowly.
Is 'synchronised' diving another such human construct? Would a similarly-slowed video demonstrate a similar lack of unison for diving grebes?
Michael Price Vancouver BC Canada mprice at mindlink.net
"She's psychic....we've decided to find it charming." --Frasier