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References
FRAGA R, CASAÑAS H Y PUGNALI G (1998) Natural history and conservation of the endangered Saffron-cowled Blackbird Xanthopsar flavus in Argentina. Bird Conservation International 8:225–267.
ASKINS RA (1993) Population trends in grassland, shrubland, and forest birds in eastern North America. Current Ornithology 11:1–34.

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