I keep going back through this thread. Some of the articles and suggestions are invaluable. I really appreciate it guys. The article posted by
@ChickensComeHome2Roost is spot on in my own experience even without birds. Like right now, I'm scrambling to plant the garden while preening the yard from excess tree trash and tall weeds.
I don't want to kill anything. In fact, I'm so conscientious of the ecology I think a chicken tractor and tightly managed bird range is imminent. I'm not a tree hugger, but I can easily see how the frogs would get out of control, the mice and voles would come in swarms into the garden and envision sheer destruction either from me killing the snakes or letting the chickens decimate the grounds.
My husband lost his job. We can pull off the purchase of about 150 sq ft of 1/2" 19 gauge to cover the tractor. Why is this thing not letting insert paragraphs? The greatest predator is the possums. There is a small family of coons but they are, literally, gun shy so they never would venture into the daylight unless provided cover or were very desperate. This is a city. We lost a couple families of them years back from that canine disease that is common in the environment. As soon as the stock tank is free, I will begin to trap some possums, reduce their numbers. Next up is skunks and occasional raccoons. Other than possums, it's dogs. Friggin' packs of domestic dogs roaming the streets and they aren't even hungry. So, we'll shut up the gates at night.
i have some excess chain link fencing I can use to cover the tractor as well to deter those strong jowls and large claws. Moving the tractor constantly will be a great defense as well as removing the feeder and waterer every night. Summers reach a quasi desert status here, so water is an attractant. The feed attracts the mice and then the snakes come in just as that article explains. That's what happens every year in our house. The mice come after the fiddle back spiders into the crawlspace of the house and the snakes pursuit. In fact, we know of a garder snake that lives under the side of our old home. so, yeah an abundance of snakies. A tractor is not enough for my girls. My conscience cannot handle it. The plan is to weave a net to use as a portable run and tightly manage their ranging habitats during the day. I will update this thread as I go along.