Heron and egret monitoring results at Marin Islands National Wildlife Refuge:2016 nesting season. A report to the San Pablo Bay National Wildlife Refuge


Kelly, J. P.
Fischer, B.

Publication Date: 

Jan 2017

Type of Document: 

In 2015, as in other years, Great Blue Herons, Great Egrets, Snowy Egrets, and Black-crowned Night-Herons nested on West Marin Island (none on East Marin Island); however, all of the nesting Snowy Egrets and Black-crowned Night-Herons abandoned the site before completing the nesting cycle and, by 2 June 2015, only five Great Blue Heron nests and 26 Great Egret nests remained active (Kelly et al. 2015). The cause of the 2015 abandonments is unknown. In 2016, we found no evidence of successful nesting by herons or egrets on West Marin Island.

PDF is: 

the full text.

Web Page Link: 


Kelly, J. P., and B. Fischer. 2017. Heron and Egret Monitoring Results at Marin Islands National Wildlife Refuge: 2016 Nesting Season. Report to the San Pablo Bay National Wildlife Refuge. ACR Technical Report 90-3-40 © January 2017. Audubon Canyon Ranch, Cypress Grove Research Center, P. O. Box 808, Marshall, CA 94940



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