Leach's Storm-Petrel Oceanodroma leucorhoa Rare, May through October, at the outer edge of the Offshore region.
Habitat: Open ocean far offshore.
Best locations: San Diego pelagic trip.
Note: The dark-rumped Chapman's race is more expected than the nominate race with white divided rump, but both occur regularly.
Leach's Storm-Petrel
Leach's Storm-Petrel
Leach's Storm-Petrel
Leach's Storm-Petrel
Leach's Storm-Petrel
Black Storm-Petrel (left) Chapman's Leach's Storm-Petrel (right)