maitaca-verde vs maitaca-de-cabeça-azul/maitaca-de-barriga-azul

The Scaly-headed Parrot and Blue-headed Parrot can be distinguished primarily by their head coloration. The Scaly-headed Parrot has a dull green body with a variable number of bluish elements on the head, while the Blue-headed Parrot features a distinct blue head. Both species are typical Pionus parrots in structure and behavior.

Look for the blue head of the Blue-headed Parrot as the most reliable field mark. The Scaly-headed Parrot's head will have bluish elements but not the solid blue of the Blue-headed Parrot.

The Scaly-headed Parrot is predominantly dull green with a red ventral patch and bluish elements on the head. In contrast, the Blue-headed Parrot has a striking blue head, which is its most distinguishing feature.