I am sorry that I missed this post. I think that Gin answered your question very well. I have not experienced the loss of a parent bird. But from what I have read, Gin is correct that a single parent will assume the prime caretaker role. It might take a bit of time (I assume that there is a “grieving” or questioning time following the loss), but survival and protection instincts seem to be pretty strong in our bluebirds.
You did the right thing.
David
David
Stafford, VA