We had (i havnt seen them for some years now) a small population of Green Parakeets in Longueville school woods in Peterborough, escapees i would think that built a small population...thats sadly gone now i assume.
There are tens of thousands of them in London and surrounding suburbs. They are a menace. Decimating fruit trees and driving out native birds. There is talk of a cull. And it's not before time.

(thats all i saw) WTF was that ??? turned round, and there was a young Jay huddled there, with only one eye !!! (funnily enough, it was yards from where i saw the Osprey). Wished i'd had the camera (as is often the case)