english county somerset probably built 11th century grade listed building scheduled monument cylindrical stone cone shaped roof contains nest boxes food possibly local lord manor owned store neighbouring farm history earliest written record exact date construction known attached mansion house burnt manor previously belonged order founded known construction undertaken family later held manor important food source historically kept eggs flesh forms property donated sir 15th scheduled ancient monument designated grade listed building repairs undertaken building store neighbouring farmer architecture building cylindrical external diameter feet inches feet high walls feet thick built sandstone doorway widened current height feet inches high feet inches wide 19th century replacing smaller door present contains nest holes arranged tiers irregular pattern boxes approximately inches wide inches wide opening smaller interior box lowest boxes feet inches earth floor kept damp away brown rats common area 18th century original hole roof entry covered flat stone covered glass interior dry interior roof holes nesting boxes
Dovecot at Blackford Farm