GREEN RING-NECKED PARAKEETS
Normally, native to India.
Hampstead Heath is now home to a flock of Rose-ringed Parakeets (also known as Ring Necked Parakeets).
They tend to live at high altitudes.
Popular pets in Victorian times, it was believed that the several flocks in London may have originated from their release from the set of "The African Queen" at Shepperton Studios in Surrey.
However, this myth was broken when it was revealed by June Sampson that no parakeets were actually imported for the film and that the film had been made at the Isleworth studios!
In the 1960s and 1970s there was a great population explosion of these wonderful birds in London!