This little tractor looks like the perfect setup for my Seramas and with a little modification a few larger size birds. I wanted to build 2 tractors for my garden and have the chickens eat between the rows. This looks like it would fit the bill very nicely.
Its a great setup for a few hens. Good job Now let your wife pick out a pullet for mothers day.
On free ranging... I am on 5 acres, coyotes howl all the time, eagles and hawks fly over all the time. There are owls (I can hear them) and I saw a raccoon coming out of the barn too... my...