Blue-winged Parakeet
Psittacula columboides
The blue-winged parakeet is bluish grey with a long yellow-tipped tail. The black neck ring is complete in both males and females. The male has a bluish-green lower edge to the black collar and the upper mandible is red with a white tip while the female has an all black bill and has only the black collar. The female looks similar to the female of the plum-headed parakeet which however can be told apart by its broad yellow collar. Flocks move through the forest while calling out in a series of screeching keek-keek-keek calls.
ID text from Wikipedia, CC BY-SA 4.0
Slaty-headed Parakeet
Psittacula himalayana
Adults of both sexes have green (tinted with blue) feathers on most of their body. It has a dark grey (slate colored) head with a light blue tint where head meets the neck. Males feature dark maroon patches on inner wing coverts. Females do not feature these maroon patches. Males have long central tail feathers which are shorter in female birds. The tail is green at base and becomes deep blue and widely tipped with bright yellow. The parakeet features a bright red-orange upper mandible with a pale yellow lower. It also has a pale yellow eye.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Blue-winged Parakeet and Slaty-headed Parakeet.