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González-García, F., Contreras Reyes, A. y Straub, R. 2009. First documented record of Crimson-Collared Grosbeak (Rhodothraupis Celaeno) from Central Veracruz, Mexico. ACTA ZOOLÓGICA MEXICANA (N.S.). 25, 1 (abr. 2009), 203–205. DOI:https://doi.org/10.21829/azm.2009.251619.