Heron and egret monitoring results at West Marin Island: 2009 nesting season

Author(s): 

Kelly, J. P.
Fischer, B.
Condeso, T. E.

Publication Date: 

Jan 2010

Type of Document: 

Technical Report

Audubon Canyon Ranch (ACR) has been monitoring the number of nesting herons and egrets on West Marin Island since 1979 and the annual reproductive success of Great Egrets and Great Blue Herons since 1993. Nests are monitored during repeated visits each year, from viewing positions on East Marin Island and by boat. This work is part of a regional study of heron and egret colonies in the northern San Francisco Bay area.

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Citation: 

Kelly, J. P., B. Fischer, and T. E. Condeso. 2010. Heron and egret monitoring results at West Marin Island: 2009 nesting season. Report to the San Pablo Bay National Wildlife Refuge. ACR Tech. Rpt. 90-3-21 © February 2010, Audubon Canyon Ranch Cypress Grove Research Center, P.O. Box 808, Marshall, CA 94940.

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