Azure-rumped tanager  (Tangara cabanisi)

This stunning bird is found only in a very small area of Mexico and Guatemala, and has predominantly sky-blue plumage. The iris and the region between the eye and the bill are black, giving the appearance of a mask, and the crown is a purplish-blue. The back is mottled green, and the underparts are pale and scaled black on the breast. There are also black patches in the centre of the uppertail and at the tops of the wings (2). Sexes are similar in appearance, but juveniles differ by having duller plumage (3). The azure-rumped tanager can be heard calling when moving from tree to tree; calls include flat bursts of ticking notes, a low, slow se-e-eet or a loud and excited chi-tuck tweet (4).