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Yury-Yáñez, R. .; Torres-Araneda, A. .; Soto-Acuña, S. . New Observations of Fulica Ardesiaca (Gruiformes: Rallidae) from Carrizal Bajo Wetlands and a Possibly Case of Hybridization. Boletín MNHN 2009, 58, 100-103.