Yeah, they made a nest in the gravel left behind from a torn down building near where I live. I found the nest because as I was walking ~40 feet away one of them started going nuts. I never would've noticed the nest had they not called my attention to it :/
It was fun watching the baby birds emerge though, I thought the rain had drowned them for a while.
Looks like some of the kids built her a nice protective ring of rocks around the nest?
It was a pre-existing "rock garden" they made in 2019.