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).
![]() Bird Rock as of 2009[update] | |
![]() ![]() Bird Rock ![]() ![]() Bird Rock | |
Geography | |
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Coordinates | 38°13′48″N 122°59′40″W[1] |
Total islands | 1 |
Administration | |
United States | |
State | California |
County | Marin County, California |
A seabird colony, the island is covered with a layer of guano. Cormorants are common on the island,[3] and ashy petrels were found breeding there in 1972.[4]
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