USFWS biologists estimate the number of monarchs in each roost (23294313799)

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USFWS biologists estimate the number of monarchs in each roost (23294313799)

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Summary

Goleta, Calif. (December 9, 2015) USFWS biologists look forward to supporting the Xerces Society in future monarch butterfly counts, to get a better understanding of their population on the Western coast, and to monitor known overwintering locations.

Photo by Ashley Spratt/USFWS.

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Date

12/01/2013
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Source

U.S. Fish and Wildlife Service
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Public Domain

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