London’s bright green parakeets are mostly the descendants of escaped or released pet birds that found London’s parks, gardens, and mild urban climate perfect for settling and breeding. Over several decades, these small parrots have multiplied so successfully that they are now a common (and noisy) part of the city’s everyday wildlife.

What the birds actually are

  • The birds people see in London are mainly ring-necked or rose-ringed parakeets, a small parrot species originally from parts of Africa and South Asia.
  • They thrive in flocks, are loud, bright green, and easy to spot coming into roost over parks at dusk.

How they ended up in London

  • Studies and conservation groups point to decades of accidental escapes from aviaries and pet cages, plus deliberate releases, as the main source of London’s parakeets.
  • Their spread really took off from the 1970s onwards, with counts going from hundreds to tens of thousands across London and the wider UK by the early 2000s and 2020s.

The fun myths and stories

Londoners love to tell tall tales about “why are there parakeets in London,” and several urban legends keep circulating.

  • A film-set escape: One famous story says they escaped from Shepperton Studios during the filming of The African Queen in the 1950s, then slowly colonised southwest London.
  • A damaged aviary: Another says a passing aircraft damaged an aviary at Syon Park in the 1970s, freeing a founding flock over west London.
  • Rock‑and‑roll rumours: There are also pop‑culture versions involving musicians and celebrity pet birds, though these remain unproven anecdotes rather than evidence.

Researchers who’ve mapped sightings over time conclude that many separate pet‑trade escapes and releases explain the pattern better than any single dramatic event.

Why they like London so much

  • London is unusually green for a big city, with interlinked parks, gardens, and tree‑lined streets that give parakeets plenty of food and nesting holes in old trees.
  • The city’s slightly warmer microclimate and constant supply of food from bird feeders and scraps make winters easier for a tropical species.
  • Urban areas also offer some protection: there is less direct persecution than on farms, even though they are legally classed as a species that can be controlled if they cause damage.

Are they a problem or just colourful?

People in London are split on whether parakeets are delightful or “green pests,” and that debate often shows up in forum discussion and local news.

  • Ecologists worry that parakeets compete with native cavity‑nesting birds (like woodpeckers and tits) and even some bats for nesting holes, because parakeets breed early and in high numbers.
  • They can damage fruit crops and tree buds, which is why they’re listed among species that can be controlled if they harm agriculture or habitats.
  • On the other hand, many city residents enjoy the splash of colour and treat them as another part of London’s multicultural character, even as birds of prey such as sparrowhawks and peregrines have begun to hunt them and may help limit their numbers.

Information gathered from public forums or data available on the internet and portrayed here.