Budgerigar

The budgerigar, also known as the common parakeet, shell parakeet or budgie, is a small, long-tailed, seed-eating parrot native to Australia. Naturally it is green and yellow with black, scalloped markings on the nape, back and wings, and it has been bred in captivity in blues, whites, yellows and greys, and even with small crests. Juveniles and chicks are monomorphic, while adults are told apart by cere colouring and behaviour. It is the only species in its genus and tribe, and is closely related to the lories and fig parrots (Wikipedia, general species account).

Wild budgerigars live throughout the drier parts of Australia, where they have survived harsh inland conditions for over five million years, helped by a nomadic lifestyle and the ability to breed while on the move, breeding opportunistically and in pairs. First recorded in 1805, budgerigars are popular pets worldwide, the third most popular pet in the world after the dog and cat. The cached account describes no wild occurrence in India and the species is not in SoIB 2023, so it appears on the Indian list only as an escaped or captive bird and its status should be checked (Wikipedia, general species account).