Usually daytime is just hawks, dogs and occasionally coyotes and foxes. Though I have heard of raccoons during the day, they are only after dusk here.
I had mink take baby chicks in the middle of the afternoon and coyotes and fox attack mid afternoon as well.
In the Delmarva region, you probably have lots more predators than fox.
Let's deal with the fox first. A fox can easily jump over a 6' fence. They can jump/climb a 10' fence. So you'll need a roof or other fox proof cover on the run.
Many predators laugh at chicken wire. It keeps chickens in but...