>Neil,
>
>Less than a week ago I was down at the Montlake Fill during late twilight
>and observed 30+ bats hunting over the grassy open areas. It looked like
>there may have been two distinct sizes. Can anyone tell me if they were
>likely to be two species or all "big brown?" Thanks.
>
>Nate Sutter

Myotis (both a genus and a common name) are the small ones, perhaps several
species (no way to tell them apart in flight), big brown bats so much
larger that there should be no doubt in your mind when you see one. I
suppose it's possible some of the other larger bats (hoary, big-eared)
could be around Seattle, but much less likely than big brown, which roosts
in houses as do myotis.

Dennis Paulson, Director phone: (206) 756-3798
Slater Museum of Natural History fax: (206) 756-3352
University of Puget Sound e-mail: dpaulson at ups.edu
Tacoma, WA 98416