Heron and egret monitoring results at Marin Islands National Wildlife Refuge: 2019 nesting season. Report to the San Pablo Bay National Wildlife Refuge

Author(s): 

Jennings, S.

Publication Date: 

Jan 2020

Type of Document: 

Technical Report

Audubon Canyon Ranch (ACR) has been monitoring the number of nesting herons and egrets at Marin Islands since 1979, and the annual reproductive success of Great Egrets and Great Blue Herons there since 1993. Nests are monitored annually, during repeated visits, from viewing positions on East Marin Island and by boat. This work is part of an ongoing, regional study of heron and egret colonies in the northern San Francisco Bay area (Kelly and Nur 2015a, b, Kelly et al. 2006).

PDF is: 

the full text.

Web Page Link: 

Citation: 

Jennings, S. 2020. Heron and egret monitoring results at Marin Islands National Wildlife Refuge: 2019 nesting season. Report to the San Pablo Bay National Wildlife Refuge. ACR Technical Report 90-3-48 © January 2020. Audubon Canyon Ranch, Cypress Grove Research Center, P. O. Box 808, Marshall, CA 93940

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