Since distress calls in a number of mammals bring predators, what is the
selective advantage of these calls that outweighs this cost?

Stewart Wechsler
Ecological Consulting
West Seattle
206 932-7225
ecostewart at quidnunc.net

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and how to enhance habitat for the maximum diversity
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-----Original Message-----
From: Rob Sandelin

Last winter I picked up by hand a townsends vole ... As I was carrying it
by the
tail back to my car it gave off an audible high note which was sustained for
the better part of a minute. A Harrier came up behind me and made a very
close pass to my arm holding the vole. It then made a bank turn and came at
me again. ...
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