Red- and Blue-headed Amazon Parrots

Green-cheeked Amazon
Green-cheeked Amazon
The Green-cheeked Amazon from Mexico, also more appropriately Red-crowned Amazon (since many Amazons have green cheeks -- but some also have red brows).
 
Amazona viridigenalis
Green-cheeked Amazon
Green-cheeked Amazon
  
Lilac-crowned Amazon
Lilac-crowned Amazon
The Lilac-crowned Amazon from Mexico, can look similar to its compatriot, the Green-cheeked Amazon, especially to juvenile Green-cheeks.

Amazona finschi
Lilac-crowned Amazon juvenile
Lilac-crowned Amazon juvenile
  
Festive Amazon
Festive Amazon
The Festive Amazon native to northern South America (Brazil, Colombia, Venezuela, Guyana, Ecuador, Peru).

Amazona festiva (festiva)
Festive Amazon
Festive Amazon
  
Bodin's Amazon
Bodin's Amazon
Bodin's Amazon is a subspecies of the Festive Amazon above with more blue on its face.

Amazona festiva bodini