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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[edit]

References[edit]

  1. ^ U.S. Geological Survey Geographic Names Information System: Bird Rock
  2. ^ "Tomales Point Trailhead". Retrieved 2009-04-25. CS1 maint: discouraged parameter (link)
  3. ^ David G. Ainley, Timothy Osborne. "A Marin County, California, Breeding Site for Ashy Petrels". Western Birds. 3 (3): 71.