For over 25 years, the Golden Gate Raptor Observatory (GGRO) has been a program of the Golden Gate National Parks Conservancy in cooperation with the National Park Service.
The GGRO’s mission is to inspire the preservation of California raptor populations. The GGRO was formed in the early 1980s to track the Golden Gate migration, an annual flight of tens of thousands of hawks, eagles, falcons, and vultures, birds collectively called “raptors.”
The information above can be found on the official website of Golden Gate Raptor Observatory. For more details about the organization and to find out how you can volunteer, please visit their website: http://www.parksconservancy.org/programs/ggro/