Yes, I heard them peeping in there softly. Must have heard movement & thought mom or dad was coming & then this head popped up with the mouth W*I*D*E open & that little dickens sat there with the mouth about as big as the hole in the nest box. I had time to go back in the house, get the camera & shoot! One persistent little bluebird it is for sure. It's going to be a survivor. Don't know how many are in the nest. Not opening it to find out.
