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
♦ ²Ben-Dov, Y., Miller, D.R. & Gibson, G.A.P. ScaleNet 4 November 2009