Finchwold
Nest boxes
Which hole, how high, and when cleaning is allowed.
Nest boxesNest boxes: hole sizes, height and when to put one up
The BTO’s hole sizes, including where two BTO pages disagree, plus height, shelter and the February prospecting window.
Nest boxesWhen you may clean a nest boxThe BTO’s 1 September to 31 January window, and what section 1 of the Wildlife and Countryside Act says in England and Wales.