Medium-sized, uncommon rainforest parrot. Combination of green body, brown collar, and black head is unique in range. Also occurs in lower-stature forests with sandy soils. Flies fast and low; usually seen rocketing past in small groups, through the forest canopy or just above it, disappearing quickly; odd, nasal calls are often heard just before such appearances. Like other parrots, forages on fruit and flowers in forest canopy.