We could not run the bird banding program at Coyote Creek Field Station without our volunteers.

More than 60 volunteers participate in this three-days-a-week, 52-weeks-a-year data collection program, contributing their time, expertise, and nimble fingers to increasing our understanding of local bird populations.

Their work directly feeds important research, such as the paper published last May showing that wildfire smoke changed bird health and behavior at CCFS.

Every year, SFBBO staff band close to 200 Western Snowy Plover chicks in an attempt to track individuals so we can assess survival and fledging rates. September is always an exciting time of year because the breeding season is over and large foraging flocks of juveniles are forming at the most popular ponds. This means staff have great opportunities to read lots of band combinations during one survey.

Back in July, we banded a brood that had hatched on a levee in Eden Landing Ecological Reserve. While banding the chicks, the male associated with the nest did a great job defending his chicks by performing a broken wing display next to us repeatedly. ​

As the incidence and intensity of wildfires continues to increase due to climate change and other factors, scientists are looking at long term data sets to understand the impact of these disasters on animals, including birds. 

Recently, researchers used two decades of bird banding data collected at our Coyote Creek Field Station (CCFS) to investigate how wildfire smoke has influenced the capture rates and body condition of passerines or near-passerine bird species. 

​SFBBO staff and volunteers are out in the current and former salt ponds of South San Francisco Bay and watching some of the most interesting shorebirds as they stop by during this summer migration: Wilson's Phalaropes and Red-necked Phalaropes. Surveys undertaken over the past five years have found a species in a long-term ongoing population collapse, with contemporary counts 98% lower than the more than 40,000 birds observed in the 1980s and more than 50% lower than counts in the early 2000s.

These unique saline-specialist shorebirds stop in San Francisco Bay--as well as saline lakes throughout the Great Basin like Mono Lake, Lake Abert, and the Great Salt Lake--to forage and fatten up early in migration before making the rest of the long trip to their wintering grounds in South America. 

The most obvious explanation for their decline is that the transition of ponds managed for commercial salt production into lower-salinity ponds managed for wildlife under the South Bay Salt 

For more than 40 years, SFBBO biologists and community science volunteers have studied passerines and other landbirds through bird banding research at our Coyote Creek Field Station (CCFS), which sits in the middle of an old restoration site in the South Bay.

​On March 2nd, Producer Molly McCrea from KPIX, a local affiliate of CBS News, visited our banding station to see our scientists and volunteers in action, talk about climate change, learn about our new Motus wildlife tracking technology, and capture video of the beautiful avian species we aim to protect. ​

​On March 28th this year, I co-authored and signed a petition for the U.S. Fish and Wildlife Service to list Wilson’s Phalaropes as endangered under the Endangered Species Act. The petition was coordinated and submitted by the Center for Biological Diversity (read their press release here). 

This work is a culmination of two decades of waterbird surveys biologists at the San Francisco Bay Bird Observatory have conducted in San Francisco Bay, including five years of focused summer phalarope surveys carried out with the help of our dedicated team of volunteer community scientists. In the 1980s, during days of peak migration San Francisco Bay had around 40,000 Wilson’s Phalaropes foraging on salt ponds here in order to gain enough fat reserves to continue their migration to wintering grounds to South America.