Parakeets are becoming much more common, a result of people letting them go when they stopped wanting to care for them. They're now reaching the flocking stage, there are that many around Heathrow...we used to get quite a few Parakeet strikes to aircraft.
Did quite well in my hour although the flock of Starlings that normally desends on my garden missed the boat for counting, my Robin also never showed up nor did the Goldfinches and Bluetits.