Flight risk: Lincoln Cathedral's falcon chicks

Four peregrine falcon chicks which hatched at Lincoln Cathedral are now ready to fledge and take flight.

But learning to fly is a difficult business, even for a peregrine falcon, and things don't always go to plan - so cathedral staff have developed a method of rescuing the fledglings and returning them to their nesting box on the main tower.

Image courtesy of Bruce Hargrave.