Nature here has something in common with local cuisine - it is believed to be dull and not very manifold by foreigners. But really similar stereotypes are no longer actual in both cases, for those were enormously enriched during the last century with novelties from all over the world growing into everyday life and culture.
Okay, coming to the point, I just wanted to show this low-quality picture of London parrots:
I've found an article about English parrots from 2004 but from that time as you can assume their population only rised. Birds from the picture above are green parakeets also mentioned in the text.