A biology colleague of mine said he had been told that since 1000 AD there
have been nearly 1000 birds that have gone extinct. He didn't know the
source of this figure. Does anyone out there have a reference to such a
figure, or have strong feelings about whether it is correct? 1000 seems
high to me.

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Robert Cleland

Professor (Emeritus), Biology Dept. Box 355325
Univ. of Washington
Seattle, WA 98195-5325
Phone (206) 543-6105; FAX (206) 685-1728