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Leach's Storm-Petrel: This medium-sized petrel has a dark brown body and a white rump and under tail feathers. The wings are dark with a pale gray-brown bar on the upper wings. It has a long, dark forked tail, and a black bill, legs and feet. Its flight is bounding and erratic with frequent changes of direction and speed. It mainly feeds on fish, squid and shrimp. Sexes are similar.
The Leach's Storm-Petrel now has two subspecies, the Townsend's Storm-Petrel and Ainley's Storm-Petrel. Split in 2016 by the American Ornithologist Union. Both are outside of North America.
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Least Storm-Petrel: Small, very rare storm-petrel with dark black-brown body and short, wedge-shape tail. The wings have black wing tips and pale brown diagonal bars visible in flight. It is the smallest Pacific storm-petrel. Flight is swift and direct on deep wing beats. Often flies low over water.
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