Feral parakeets in Great Britain are feral parakeets that are an introduced species into Great Britain. The population consists of rose-ringed parakeets, a non-migratory species of bird that is native to Africa and the Indian Subcontinent. The origins of these birds are subject to speculation, but they are generally thought to have bred from birds that escaped from captivity. The British parakeet population is mostly concentrated in suburban areas of London and the Home Counties of South-East England, and for this reason the birds are sometimes known as "Kingston parakeets" or "Twickenham parakeets", after the London suburbs of Kingston upon Thames and Twickenham. The parakeets, which breed rapidly, have since spread beyond these areas, and flocks have been sighted in other parts of Britain. There is a flock of around 20 to 30 settled in Victoria Park, Glasgow. Other separate parakeet populations exist around other European cities.
Origin of the flocks
How exactly the parakeet population first came to exist and thrive in the wild in England is not known. Consistent with the first widespread photographs of the birds in the mid-1990s are multiple theories that a pair or more breeding parakeets escaped or were released. More specific introduction theories have been published, such as that:
Romantic theories associated with film studios and rock stars are considered fanciful, however, and most ornithologists believe that the original birds probably escaped from aviaries before 1971. In terms of geographic origin, the British birds are considered a hybrid population of two Asian subspecies, P.k. borealis and P.k. manillensis.
Population in Britain
Escaped parakeets have been spotted in Britain since the 19th century. The earliest recorded sighting was in 1855 in Norfolk, and parakeets were also seen in Dulwich in 1893 and Brixton in 1894. Parakeets continued to escape captivity, but populations repeatedly died out until 1969, when the species began to breed and persist in London. Beginning in Croydon, they spread to Wraysbury, Bromley and Esher. The numbers remained very low, however, until the mid-1990s, when the population appeared to start increasing rapidly. The population was estimated at 500 in 1983, reached 1,500 by 1996, and 5,800 in the London area in 2002. British parakeets are most common in the south-east of England, including London suburbs, Surrey, Kent and Sussex. Parakeet populations have also been reported further north in Liverpool, Manchester, Birmingham, Oxford and Edinburgh. As parakeets are spreading and breeding so quickly, estimates of parakeet numbers vary. According to the London Natural History Society in the early 2000s, the largest population was believed to exist in the South London suburbs where, until 2007, the birds roosted principally in Esher Rugby Ground, Esher. The Royal Society for the Protection of Birds estimates that there are around 8,600 breeding pairs in Britain. Other scientific counts in 2012 have placed the number at around 32,000 birds.
Ecological impact
Concerns have been raised over the impact of the growing numbers of parakeets in south-east England. Scientific research programmes have analysed the behaviour of parakeets and found that they compete with native bird species and bats for food and nesting sites. Although not aggressive, parakeets deter smaller birds with noisy gregarious behaviour, and their large size means that they often crowd small bird feeders. The detrimental effect of competitive exclusion has been likened to the impact of the introduction of grey squirrel on the red squirrel. However, British parakeets are not without natural predators; ornithologists have observed an increase in the population of birds of prey in London, and have reported sparrowhawks, peregrine falcons and hobbies preying on parakeets. Parakeets are considered a pest in many countries such as Israel, where large swarms of parakeets can have a devastating effect on certain crops, and there is concern that the rapidly growing parakeet population could have unforeseen environmental impact in Britain. In 2009, Governmental wildlife organisation Natural England added feral parakeets to the “general licence”, a list of wild species that can be lawfully culled without the need for specific permission.
