Identification
Fairly common, but often retiring, in tropical lowlands of both drier and more humid areas in northern South America. Occurs from sea level to around 1,500 m elevation. Favors forest edge, second growth thickets, hedges, and tangles, especially with morning glory flowers, which it munches quietly. Note plain grayish coloration with browner vent and short white eyebrow. Despite the common name, adults have at best only a slight olivaceous tinge. Immature looks slightly different, with a yellowish wash to the face and upperparts. Listen for sweet song of short whistled phrases.