When not quarantining, every day, more precisely 363 days a year to allow for any events that keep me from home.
They mostly stay under the shady shrub but nibble on anything.
To be honest, if they continue to flourish in the run, why mess with that? They can stay in the run if it provides the healthiest lifestyle. After all, it's so few hens in such a big space.
That said, once quarantine is over, of course the hens will be allowed out if they wish. They haven't even started weeding the front yard yet.