Roughly the same size as a blue jay or mourning dove, the kestrel has an average weight of 4.1 ounces (117 grams). They measure 8-12 inches in length and have a wingspan of 20-24 inches.

A self-taught photographer has come face-to-face with a kestrel swooping towards him in Cornwall. Andy Maher, from Hayle, told BBC Radio Cornwall he was out taking photos of birds in flight when ...