Green Oropendola

Male green oropendolas average 48.5 cm (19 in) long and females 37 cm (15 in). Males average 405 g (14 oz) and females 215 g (7.6 oz). Adult males have long feathers on their nape that form a crest. Females lack the crest but are otherwise like males. Adults are mostly yellowish olive. They are pink to dull orange on the lores and around their eye. Their wings are dusky olive and their rump, uppertail coverts, belly, thighs, and crissum are chestnut. Their central pair of tail feathers are dusky olive and the rest yellow with dusky olive outer edges on the outermost pair. Voice: The male green oropendola's song is "variable and complex". They "commonly start with a descending whistle (barely audible at distance) and/or rattling sounds". A lyrical description calls it "a rapid, squealing, and liquid Qu-Q-Q-q-q-q-qD'D'D'CLOCK, agoogoo, 1st part like a giant spring stretching, then dull sticks knocking, last par a mellow hooting".