[Mnbird] water

Raymond Faber RFABER at smumn.edu
Sun Dec 16 21:17:51 EST 2018


One of my friends once did his PhD research by determining lower critical
and lethal temperatures in house sparrows from various parts of the United
States.  He found, not surprisingly, that birds from Churchill, Manitoba
survived much lower temperatures than those from Texas.  He attributed this
to differences in behavior--birds from Churchill lowered the feathers of
the upper leg over the lower leg to increase insulation AND they got water
by eating snow.  Northern birds in cold temperatures do just fine by eating
snow.

Ray Faber

-- 
Raymond A. Faber, Ph.D.
Professor of Biology
Saint Mary's University of Minnesota
700 Terrace Heights #1524
Winona MN 55987

Telephone: 507-457-1540
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