Well it looks like the 5 bluebird eggs aren’t going to hatch, and the female has been MIA for the last few days. The male has begun calling from the tops of trees and from the house, in vain it seems.
Meanwhile, house sparrows are trying to build a nest in the screech owl ‘slot’ style box(SQR). 3 almost full nest have been removed. they didn’t have anything to do with the failed bluebird attempt, as the monofiliment detered them fine.