We have a strip of ground bordering our property that is about 5 feet wide and 300 feet long that goes crazy with weeds every year. Got to thinking that maybe I could build a chicken tractor and use the chickens to help control it but I am wondering if anyone can give me any tips, i.e., lightweight chicken tractor ideas- kind of thinking I need something flexible because the ground is not very level, any weeds that I should watch out for that could make them sick, any other tips that I don't know I need! I would not be keeping them in it full time, they have a coop and run that is much larger and on another area of the property but I want to get them out daily when possible because the run has no vegetation in it. This would be a daytime chore for them- if you could call it a chore for a chicken but it sure has been for me! Another note: this property is bordering a property with many many, (read dozens of) ferral cats, do you think ferral cats would attempt to attack a group of full grown orpingtons? I plan to make the chicken tractor tough enough that they can't just reach over and attack them and my dog is trained to remind kitty cats not to come over here so I know she will run any off but I still worry about this- that is one reason I am hesitant to free range. Thanks!