Monotypic. Grouped by some authorities within a
superspecies including Leach's Storm-Petrel
and Swinhoe's Storm-Petrel
Medium-brown Storm-petrel with lighter wing linings and long tail. Browner than either Black or Least Storm-petrels, often seeming to have a gray cast to them.
During at ease flight, Ashy's wing beat rhythum
is intermediate between that of Black Storm-petrel and Least Storm-petrel
but with shallower strokes, particularly on the upstroke which does not
lift above the plain of the body. Gregarious, sometimes found in very large
roosts (e.g. on N and S rims of Monterey Submarine
Where and When
Restricted to the coast of California and Northern
Mexico. Breeds off California (Farallon Islands, Channel Islands (San Miguel,
Santa Cruz and Santa Barbara) and south to the Coronados Islands off Tijuana
on the US-Mexico border. Click
here to view a range map for the Caribbean and central America. A major
fraction of the world population occurs in Monterey Bay during the fall.
Winter range poorly known.
Photographs on the web
power flight showing underwing Photo by Monte Taylor. Presumably taken
Copyright © 2002 All rights reserved. Angus
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