With regards to letting chickens roam...they are hungry hungry shreaders! 😁🐓
Our place is a rectangle, 50% un landscaped orchard (East and West sides). House/garage/barn and drive in long ranch style down the center.
Landscaped areas against the house with a gazebo and rose garden at North end. We also grow a kitchen garden 15'x20' at North end.
The chickens scratch bark out of all the beds.
They nip all new growth from roses and other shrubs. Have destroyed ground cover and also (happily) weeds.
I laughed at myself while building a fence around the vegetable garden. (Right, get chickens for fun, build a Coop...then fence your garden. 🙄