…and more feathered neighbors…

In Florida I happen upon a lot of birds, or they happen upon me. The other day there was a lot of activity in a tree outside our RV. A pair of birds had been building a nest…

This bird was in the tree, and I was pretty sure it was the nest builder.

…and then I saw this bird. It was in the shadow of the tree, and since it had a similar look I thought it was the mate.

But when I looked at the photos, the birds did not look alike at all. The top bird is a Tufted Titmouse (not sure about the sex) and the bottom is a female Northern Cardinal. So now I don't know which bird built the nest!