The peregrine falcon has a body length of 34 to 58 cm (13–23 in) and a wingspan from 74 to 120 cm (29–47 in).
It has long, broad, pointed wings and a relatively short tail. It is blue-grey above, with a blackish top of the head and an obvious black 'moustache' that contrasts with its white face. Its breast is finely spotted. It is swift and agile in flight, chasing prey. The strongholds of the breeding birds in the UK are the uplands of the north and west and rocky seacoasts. Peregrines were at a low point in the 1960s due to human persecution and the impact of pesticides in the food chain. Improved legislation and protection has helped the birds to recover and they have now expanded into many urban areas. However, they are still persecuted - birds are illegally killed to prevent predation on game birds and racing pigeons, and also have eggs and chicks taken for collections and falconry.
Peregrine falcon caught on Video on top of the YMCA in Watford Town Centre Hertfordshire.
original content and news reporting by watfordlondon.