Very local in inshore marine waters near Puerto Montt, Chile, where it can be locally numerous. Similar to the common and widespread Wilson’s Storm-Petrel (and may simply be a localized population of that species), but averages more white in plumage, especially on underwing and vent area. “Classic” Pincoya has big white panel on underside of wing, but other birds darker overall, and may not be distinguishable from Wilson’s Storm-Petrel.
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