Attributes / relations provided by
♦ ¹Current Status and Conservation of the Scarlet Macaw (Ara macao) in the Osa Conservation Area (ACOSA), Costa Rica, Fiona Dear, Christopher Vaughan and Adrián Morales Polanco, Research Journal of the Costa Rican Distance Education University Vol. 2(1): 7-21, June, 2010
♦ ²NOTES ON THE DIET OF THE CRIMSON-COLLARED GROSBEAK (RHODOTHRAUPIS CELAENO) IN NORTHEASTERN MEXICO, Jack Clinton Eitniear & Alvaro Aragon Tapia, ORNITOLOGIA NEOTROPICAL 11: 363–364, 2000