Indian Rose -ringed parakeets colonise UK

UK has an Indian immigration problem - with a difference:

"The rose-ringed parakeets, which are native to the Himalayas, have grown over 30,000 in Britain and have colonised parks and gardens in London, Surrey and Kent.

Christopher Butler, professor at Oxford University, predicted that parakeet numbers in Greater London would rise by 30 per cent a year. The Royal Society for the Protection of Birds (RSPB) estimates their number will rise to 50,000 by 2010."

This development threatens quiet a few native birds in the UK.