Mountain Cacique

Mountain caciques are about 25 to 30 cm (9.8 to 12 in) long. Males weigh about 92 to 98 g (3.2 to 3.5 oz) and females about 64 to 67 g (2.3 to 2.4 oz). The sexes have essentially the same plumage though females are a duller black than males. Adults are almost entirely glossy black. Their lower back and rump are yellow, and some individuals have some to much yellow on the upperwing coverts. They have a blue to bluish white iris, a pale yellow-ivory to greenish ivory bill with a bluish gray base, and black legs and feet. Juveniles have dark brown eyes but are otherwise like adults. Voice: The song of the male mountain cacique is described as "pig-like squeals followed by high-pitched notes and accelerating into a rattle". It is "quite vocal, with a variety of loud calls including a wree-wree-wree-wreeuh, sometimes just a single wree! or kreeuh!, and a repeated more nasal skeeuh".