The primary goal of ACR’s Heron and Egret Project is to develop and apply current and historical information on the status of herons and egrets to wetland conservation concerns in the San Francisco Bay Area. We monitor local and regional nesting abundance and reproductive performance trends and evaluate the impact on wetland conservation. 

Our current work focuses on the effects of climate change and human disturbance to heronries. Data and reports generated by the Heron and Egret Project have been:

  • published in peer-reviewed scientific journals
  • submitted as technical reports to partner agencies
  • provided to landowners, biologists and local and regional planning  departments

Through formal scientific contributions, our results contribute to worldwide activities in conservation science. 

Get involved


Join our volunteer field observers and track heron and egret nesting sites throughout counties in the northern San Francisco Bay Area. Visit the program's volunteer page for more information.