Markham's Storm-Petrel Oceanodroma markhami
Version: 2.0 — Published October 29, 2020
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There are six known breeding colonies, including those in the Paracas Peninsula (Ica, Peru: 13), Arica (with sub-colonies in Pampa Chuño, Pampa La Higuera, Pampa Chaca, Pampa Camarones, and Pampa Tana), Salar de Quiuña, Caleta Buena, Salar Grande, and Salar Navidad (11, 14). Other breeding localities probably exist, especially in Southern Peru and near Pica (eBird S18031705).
At sea, Markham's Storm-Petrel favors the cool waters of the Humboldt current off Peru and northern Chile, but can range much farther, having occurred between the latitudes of 18°N (off-Mexico) and 30°S (off-Chile; 2), and as far west as 118.02°W (15). In the austral autumn, the highest densities have been documented just offshore from central Peru. In the austral spring, some high density remains off southern Peru and northern Chile, but an even higher concentration congregates about 1,700 km west of there as well (15).
A grounded bird was recorded in Valparaiso, far from its regular range (eBird S29422372).
Historical Changes to the Distribution