Subject: Echolocation in Diving Birds
Date: Feb 9 10:00:26 1997
From: Michael Price - mprice at mindlink.bc.ca


Hi Tweets,

The assumption is that deep-diving seabirds use eyesight alone in prey location.

But does anyone know whether they use echolocation in finding prey? Would
they be sensitive to turbulence caused by swimming fish? Has it ever been
shown that they use (bill-) click-ranging for determining distance to a prey
fish, as do dolphins?

>From that, might they be sensitive to the extremely low cycles of
infrasound? To the extent they may abandon an area?

Cheers

M




Michael Price
Vancouver BC Canada When I found out that seven of my years
(604) 668-5073 vx was only one of theirs,
(604) 668-5028 fx I started biting absolutely everything.
mprice at mindlink.net
michael.price at istar.ca -Max Carlson (Ron Carlson's dog)