Bird Rock (Marin County, California)

A rock formation in Marin County, California

Bird Rock is a rock formation and a small Pacific island west of Tomales Point in Marin County, California that is roughly 2 acres (0.8 ha).

A seabird colony, the island is covered with a layer of guano. Cormorants are common on the island,^[2] and ashy petrels were found breeding there in 1972.^[3]

See also

• Bird Island (Marin County, California), located about 35 miles (56 km) to the southeast
• List of islands of California

References

1. "Bird Rock". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved February 21, 2024.
2. "Tomales Point Trailhead". Retrieved 2009-04-25.
3. David G. Ainley, Timothy Osborne. "A Marin County, California, Breeding Site for Ashy Petrels". Western Birds. 3 (3): 71.