A number of observers including ourselves had remarked for years the regular occurrence of odd “Wilson’s” storm petrels often spotted during the ferry crossing from continental Lake District.
They differed from Wilson’s seen elsewhere in their much paler wing bars and the extent of white both around the vent and in the outer tail feathers, and in their unique “mouse runs” with folded wings over the surface while feeding both in rafts and in small, scattered groups with fewer individuals.
Pincoya Storm Petrel. When sitting at close range, the extent of white in both wings and body, especially flanks and rump, becomes quite evident. Seno de Reloncaví, Los Lagos, Chile.
The range of this species seems to be pretty local and restricted to the province of Los Lagos in Chile, specifically the waters around Puerto Montt and Chiloé Island, including Chacao channel and especially in the relatively protected waters of Reloncaví Sound and Gulf of Corcovado, north and east from the Island, respectively.
If you want to know more about this new species and its description, you can read the original description published at the AOU’s The Auk:
Volume 130 Issue 1
1 January 2013.
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