Three nests with nestling, one set of eggs destroyed by a house wren

I was afraid of a wren being too close to the North side nest last time. It is in the previous post. Now it destroyed all 5 eggs in the nest up there. I tried a cardboard wren guard but the rain blew it off. Also on the North side I found a dead tree swallow in a box, an adult.

In better news, on the South side the eggs in Box 4 hatched. This box is to my liking in timing. The others two are fine so far as well.

These were napping, I could not get any interest to move and pose for me. The mom was in a tree nearby with a spider ready for lunch for them. She kept it in mouth the entire time I was there.