The weather went cold 13 degrees and rain , northernlies. Most of the prospecting birds disappeared and I saw very little of the residents.
3 days later back to 22 degrees and warm weather - activity again.
Box 2 and 3 continue to incubate and they have been very discreet.
The single bird in box 1 is still roosting in there (last night) and also 6 prospecting birds have been hanging around but non have gone in any boxes yet.