Azure-rumped Parrot

Azure-rumped Parrot is a large bird endemic to Indonesia. It was previously conspecific with the blue-backed parrot, which is differentiated with its red iris and blue back versus the azure-rumped parrot's yellow iris and plain back. Flocks are small and often active at night. There are two subspecies: Tanygnathus sumatranus sumatranus (Raffles, 1822): Sulawesi. Tanygnathus sumatranus sangirensis Meyer, AB & Wiglesworth, 1894: Sangir Islands and Karakelong. More blue on wing bends and wing coverts, head darker green. (Wikipedia, general species account).

sangirensis was also recognized by the International Ornithological Congress in 2022 based on phylogenetic evidence. It is of medium size (32 cm), primarily green with yellowish edging to the wings, a blue rump, and blue wing bends. The head, mantle, wings and tail are darker green, the belly and collar are lighter green. It is sexually dimorphic, with the male having a red beak and the female a pale yellow or horn colored beak. (Wikipedia, general species account).