I have 11 chickens, I will probably add to that number over the next couple of years up to about 20-25. They have a big coop and run, but I was considering making a smaller portable run, and a few times a week taking a few of the chickens out and bringing them to troublesome weedy/tick infested areas of the lawn to hopefully help control that. If they are seperated for several hours will they be accepted back into the flock at the end of the day? Is it worth the trouble? Will they make much of a dent on the area I put them out in? Thanks.