A New Storm-Petrel Species from Chile

The Auk

Mark Pearman¹  Gerard Lillie¹  Jeff Gilligan¹  Alvaro Jaramillo¹  Jim Dowdall¹  Michel Sallaberry¹  Chris P. Gaskin¹  Karen A. Baird¹  Kieran Fahy¹  Shirley M. Metz¹  Michael O'Keeffe¹  Seamus Enright¹  Peter Harrison¹ 

关键词: Chile;    Chiloe Island;    Hydrobatidae;    Oceanites pincoyae;    new species;    Puerto Montt;   

DOI  :  10.1525/auk.2012.12071

学科分类：动物科学

来源: Central Ornithology Publication Office

【 摘 要 】

We describe a new species of storm-petrel, Oceanites pincoyae (Pincoya Storm-Petrel), from the Puerto Montt and Chacao channel area, Chile. The description is based on 1 specimen collected at sea in Seno Reloncavi on 19 February 2011 and 11 other individuals that were caught, examined, and released. The new taxon's foraging ecology and behavioral habits are unique among the southern Oceanitinae, including “mouse-runs” and repeated diving beneath the surface to retrieve food items. Its distinctive appearance includes bold white ulnar bars, extensive white panels to the underwing, and white to the lower belly and vent. Among species of Oceanites, it is unique in showing white outer vanes to the outer two pairs of rectrices. It further differs from all other storm-petrels in having a distinctive juvenile plumage. Morphometrically it is distinct from Oceanites gracilis gracilis (Elliot's Storm-Petrel) and smaller than O. oceananicus chilensis (the Fuegian form of Wilson's Storm-Petrel), having a shorter tarsus and longer middle toe. There also appear to be differences in the timing of breeding and molt between the new taxon and both O. o. chilensis and O. g. gracilis. We estimate the population size of the new species as ∼3,000 individuals.

【 授权许可】

Unknown