Falconry - Escaped Falconry Birds

Escaped Falconry Birds

Falconers' birds are inevitably lost on occasion, though most are found again. The main reason birds can be found again is because, during free flights, birds usually wear radio transmitters or bells. The transmitters are in the middle of the tail, on the back, or attached to the bird's legs.

Records of species becoming established in Britain after escaping or being released include:

• Escaped Harris hawks reportedly breed in the wild in Britain.
• The return of the Goshawk as a breeding bird to Britain since 1945 is due in large part to falconers' escapes: the earlier British population was wiped out by gamekeepers and egg collectors in the late 19th and early 20th centuries.
• A pair of European Eagle Owls bred in the wild in Yorkshire for several years, feeding largely or entirely on rabbits. The pair are most likely captive escapees. It is not yet known if this will lead to a population becoming established.
• In 1986, a lost captive-bred female prairie falcon (which had been cross-fostered by an adult peregrine in captivity) mated with a wild male peregrine in Utah. The prairie falcon was trapped and the eggs removed, incubated, hatched and the hybrid offspring were given to falconers. The wild peregrine paired with another peregrine the next year.
• Falconry in Hawaii is prohibited largely due to the fears of escaped non-native birds of prey becoming established on the island chain and aggravating an already rampant problem of invasive species impacts on native widlife and plant communities.