You don’t mess with things beginning with ‘para’. Paratroopers. Paranoid men with shotguns. And parakeets, which are the Jean-Claude Van Damme of the bird world, according to Behavioral Ecology. In a study of the feeding patterns of more than 10,000 birds in the capital, the journal found that whenever a parakeet was at a bird-feeder, other species legged it. It looks like London’s native species are being outgunned and the future of the city’s skies is looking bright green. Shame. Still, let’s not get all Daily Mail about these avian invaders. After all, a lot of our indigenous bird population are tits.