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

Rose-ringed Parakeet
Psittacula krameri
Rose-ringed parakeets are 37–43 cm (15–17 in) in length, including the tail feathers, a large portion of their total length. The folded wing length (outer wing joint to wing tip) is 14 to 16 cm (5.5 to 6.3 in) in African birds, and 15 to 19 cm (5.9 to 7.5 in) in Asian birds, and the tail length is 17 to 27 cm (6.7 to 10.6 in) in African birds, and 16 to 29 cm (6.3 to 11.4 in) in Asian birds; within Asian birds, P. k. borealis has longer tails than P. k. manillensis, and in all, males have longer tails than females.
ID text from Wikipedia, CC BY-SA 4.0

Where you might meet both
Learn this pair in the BeakBrain App
Photo and call practice. Coming soon to iPhone and Android.
Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Blue-winged Parakeet and Rose-ringed Parakeet.