One of my elderly relatives had a farm.
They got to old to work it but they kept some general purpose chickens and raise a hog or two for family get together.
There was also an old cow long past he working years that was a pet more than anything else.
Now the thing about the chickens is they DO eat everything.
So does a pig of you have food scraps, but a good general purpose chicken is they eat all the insects and clean up any spilled grain.
They keep the rats and mice away, and insect populations down.
I wish I had a picture of these birds.
They were not good laying hens, small, long legs ( too fast but as kid you love to chase chickens HA HA )
Seems to me they could fly a little…