I have a TON of them here in West Michigan. Hubby puts his fish guttings out for them and we often see 25 at a time. I have yet to find a nest.

I still see them soaring overhead once in a while but they don't congregate on the lake shore like the did in cooler weather. Wish they'd come to my house, it smells like something died in my shed!

We have both turkey and black vultures. They soar overhead, catching the thermals, and clean up the roadkill. Bless their little stinky-breathed hearts!
We have them year 'round and are grateful for the clean-up work they do.