Chestnut-breasted Chlorophonia

The chestnut-breasted chlorophonia is a chunky, short-tailed, stubby-billed bird. It is about 12 cm (4.7 in) long and weighs 16 to 18 g (0.56 to 0.63 oz). The species is sexually dimorphic. Adult males have a green forehead and a rich cyanine-blue crown and nape. They have a thin dark red band between them that extends past the eye and a thin pale blue band at the base of the nape. Their lores, face, throat, and upper breast are shiny emerald-green with a thin black line beneath the upper breast. Their mantle, back, and upperwing coverts are bright green and their rump bright yellow. Voice: One description of the chestnut-breasted chlorophonia's song is "a long, rambling tut-tut-tut too-dée...or na-deaár, na-deaár...to-d'leép with variations". Its most common call is "a soft, nasal neck-nuur over and over". It also makes "a nasal, downslurred whistle, teeeur" as a contact call.