Swallow Tanager

These colorful birds are both Swallow tanagers, Tersina viridis (Passeriformes - Thraupidae), a species native to South America that displays a distinctive, sexually dimorphic, coloration.

Male Swallow Tanagers (top) are shining turquoise blue, with a broad bill and black on the forehead and throat. While females (bottom) are a dull green overall with buffy yellow underparts. 

Reference: [1]

Photo credit: ©Mariza Sanches  |  [Top]  -  [Bottom]

Locality: Piraju, Sao Paulo, Brazil