Ainley's Storm-Petrel
Ainley's Storm-Petrel
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Ainley's Storm-Petrel is a recently recognized species, formerly considered a subspecies of Leach's Storm-Petrel. It is a medium-sized, dark storm-petrel of the Pacific Ocean.
Where to spot
Breeds on islands off southern California and Baja California, including the Channel Islands and Guadalupe Island. Disperses widely across the Pacific, including towards Hawaii.
How to spot
Distinguishing from other dark storm-petrels like Leach's requires careful observation of subtle differences in flight, tail shape, and calls. Look for its dark plumage, shallow forked tail, and a pale wing bar. Best seen on pelagic trips off California and Mexico.
When to spot
Breeding occurs from spring to autumn. Can be observed at sea throughout the year in its foraging range, with movements influenced by food availability.
Where to spot
Breeds on islands off southern California and Baja California, including the Channel Islands and Guadalupe Island. Disperses widely across the Pacific, including towards Hawaii.
How to spot
Distinguishing from other dark storm-petrels like Leach's requires careful observation of subtle differences in flight, tail shape, and calls. Look for its dark plumage, shallow forked tail, and a pale wing bar. Best seen on pelagic trips off California and Mexico.
When to spot
Breeding occurs from spring to autumn. Can be observed at sea throughout the year in its foraging range, with movements influenced by food availability.
Its distinction as a separate species was primarily based on genetic differences and variations in its calls and morphology, highlighting the complexity of storm-petrel taxonomy.
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