Where the Girls Run
The girls have unlimited, easy access to all three spaces [open spaced large yard, chain-link fully protected space with coop, and semi-enclosed fenced pine tree area] for most of the day on most days. The yard is where they get their exercise, either by playing catch me if you can, semi-flying here and there, or general foraging. They also enjoy resting under the shade-giving maple tree located in the background. This is the least protected space from predators and so it is a constantly risky balance between allowing unfettered, unsupervised access and over-protectionism/mega-supervision. As most animal caretakers know, it only takes a second for something to happen and usually that something is not pleasant.
It ends up being all about probabilities and luck with hopefully, a little chicken savvy to help reduce risk.