Blue and Yellow Tanager Pipraeidea (prev. Thraupis) bonariensis

The imaginatively-named Blue and Yellow Tanager is native to north-eastern South America and northern Argentina and Paraguay.

The male develops a black face mask and black upper back in breeding plumage.

The Green-mantled Tanager above, Pipraeidea darwinii (prev. Thraupis bonariensis darwinii), used to be considered the eastern subspecies of the Blue and Yellow (it is still sometimes classed as a subspecies). It looks very similar but has an olive green back and bright yellow rump instead of the male's black back.