Roosting birds

This nest box was not used for nesting, but somebody is roosting in it this winter. It’s on a back porch, and it’s warm sheltered position is great for a roosting spot. Many birds roost on porches and patios on homes.

Unknown bird nest, please identify

We found this nest below our deck after the birds had left it this fall.
We tried to find photos on line which would identify the species that made this nest but did not.
Please identify the bird species that made this nest.