Entrance hole protective covers? Yes? No? Apr 23, 2020 14:33:45 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by matt on Apr 23, 2020 14:33:45 GMT Another interesting article, which pulls together points from a few different studies: www.telegraph.co.uk/gardening/gardeningadvice/9855349/A-gardeners-guide-to-nest-building.htmlAlso of interest in another study I found is that bluetits will choose a nest box without any others nearby if they can. Maybe that explains why I got a nest the year I only had one box, and haven't had one since, now I have 5 boxes?