Stercorarius antarcticus b. chilensis
In past, sometimes considered conspecific with all three congeners. Occasional hybridization with C. a. antarctica reported. Monotypic.
Coastal SC Chile (Concepción) and S Argentina (Deseado) to S Tierra del Fuego. Apparently winters mainly along coasts of Chile and Argentina, extending N to N Peru and possibly E to W Falkland Is.
Food and feeding
Status and conservation
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