Still occupied by pigeons is the dovecote at Denton, a village six miles from Northampton, on the Bedford road. It is of limestone and circular; there are three "set-backs" to the walls,. the uppermost alone being provided with a string-course. The roof and its cupola date from the middle of the last century, but the building is much older. The doorway on the south is almost square, three feet six inches high, three inches less in breadth.
Book Of Dovecotes - A. O. Cooke
http://members.aol.com/Duiven/dovecote/chapter7/cooke07.htm