Adults of the nominate subspecies have a bright green head with a bluish wash on the crown, a white eye ring, an orange chin, and a pale bill.

Their upperparts and tail are bluish green with brown wing coverts that show as "shoulders" when perched.

Subspecies B. j. exsul has entirely green underparts and a smaller and paler orange chin patch, darker "shoulders", and more olive in the mantle than the nominate.

Subspecies B. j. exsul is found in northeastern Colombia's Arauca Department and northern and western Venezuela as far as Guárico.

The species inhabits semi-open to open landscapes including Llanos, deciduous woodland, secondary and gallery forest, plantations, and treed parts of towns.

[3] The orange-chinned parakeet is generally sedentary, but at least in El Salvador wanders locally after the breeding season.

It feeds on a wide variety of foods, primarily fruits and seeds but also flowers, herbs, nectar, insects, and algae.

The orange-chinned parakeet's common calls are "a high-pitched “klee”, shrill “chree” or bisyllabic “chree-chree”" that are given when perched or in flight.