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PRBO Conservation Science
With your support, PRBO Conservation Science, the U.S. Fish and Wildlife Service, and Island Conservation are joining forces to protect Ashy Storm-petrels on the Southeast Farallon Islands.
Founded in 1965, the Point Reyes Bird Observatory Conservation Science (PRBO) is a non-profit organization dedicated to conserving birds, other wildlife and ecosystems through innovative scientific research and outreach. To accomplish this, PRBO does bird ecology research, creates management tools, leads field science training programs, and develops and delivers bird science education programs to advance biodiversity conservation in the west on land and at sea. PRBO scientists choose to study birds because they are excellent indicators of environmental health.

For the past 45 years, scientists from PRBO Conservation Science have been collecting data and studying wildlife year-round on the Farallon Islands off the coast of San Francisco, CA through a cooperative agreement with the U.S. Fish and Wildlife Service. This research has produced the longest data set on seabirds and marine mammals in North America, providing a solid foundation for understanding, protecting, and conserving the California marine ecosystem.

The Farallon National Wildlife Refuge hosts the largest breeding seabird colony in the United States outside of Alaska and Hawai`i – 30% of California’s breeding seabirds with more than 250,000 individuals of 12 species can be found there. Between 50-70% of the world’s population of IUCN listed Endangered Ashy Storm-petrels breed on the Farallon National Wildlife Refuge islands. Invasive house mice present on the South Farallon islands threaten this globally significant seabird colony.

Island Conservation is working with PRBO Conservation Science and the U.S. Fish and Wildlife Service to restore the South Farallon islands by removing invasive house mice. This conservation action will protect the Ashy Storm-petrel and other seabirds that rely on the island from further population decline.

To learn more about PRBO Conservation Science, visit
The Southeast Farallon Islands provide critical habitat for more than 250,000 breeding seabirds of 12 species

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