Green Oropendola

The green oropendola (Psarocolius viridis) is a species of bird in the family Icteridae, the oropendolas, New World orioles, and New World blackbirds. It is found in Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, and Venezuela. == Taxonomy and systematics == The green oropendola was formally described in 1776 with the binomial Oriolus viridis. Other authors placed it in generus Xanthornus before it was assigned to its present Psarocolius. It is monotypic. == Description == 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. Both sexes have a large bill with a swollen casque; the bill's inner half is pea-green and its outer…