Hi Gerry - I'm afraid the Countryfile website is three years out of date - it refers to April to June 2012, not this year! The perils of the Internet... Still lots of swifts over Wedmore.
Oh Well, there goes another theory! Thanks for the update!
20 plus carving through the air above Street outdoor pool yesterday. A real joy
Plenty of swifts over Bathpool this evening, along with swallows and house martins, and they were being harried by a peregrine and a sparrowhawk. Best Wishes, Bill.