Maybe I should charge rent

Two or three months ago I noticed a bird had built this beautiful nest under our deck. She came and laid 3 eggs; they hatched and flew away. Then a month later she came back to the nest (I was not aware that birds did that) and laid 2 more eggs. They hatched and flew away.

Then....

A few weeks later not 1....

Not 2....

But 3 more nests appeared.

Here is the cross view of all of the nests. They start in the right hand corner of the cross beam and go across to the left. You might have to enlarge the pic to see them.

Two of the nests have 3 eggs a piece. I am excited to see if these birds come back to lay eggs again. What is funny, is that the birds feel pretty comfortable with the dogs because the simply sit in their nests and watch us. They never move! We will have a whole flock of robins in our yard...Audra, are they called a flock?