Common Bush Tanager
Chlorospingus flavopectus

f5.6 @ 1/1600s, ISO:2500, Nikon D3S w 500mm

"Common Bush Tanager," Wikipedia, the free encyclopedia. The common bush tanager, also referred to as common chlorospingus, is a small passerine bird. It is a resident breeder in the highlands from central Mexico south to Bolivia and northwest Argentina.The adult is 13.5 cm (5.3 in) long and weighs 20 g (0.71 oz) on average. They have a brown head with a (usually) thin supercilium and a white spot behind the eye and a light throat. The upperparts are olive and the underparts yellow, becoming white on the belly. Coloration, especially of the cheeks, throat and eye region, is very variable across the wide range, giving weight to the theory that this these birds form a superspecies. Immatures are browner above, darker below, and have a duller olive eye spot.
El Valle de Anton, Panama