I believe these birds to be common/European Starlings. Photos were taken 5/10/19 mid morning. The nest was built in the tongue/hitch of my 5th wheel RV, we are currently located about an hour east of San Francisco CA.
I have a picture of the nest with babies but currently having trouble resizing it to fit for the forum.
I have a picture of the nest with babies but currently having trouble resizing it to fit for the forum.