I recently moved to an island off the coast of Washington state from south Georgia. I will be building a chicken coop soon but have questions about safeguarding against predators. The island is heavily populated in fox and raccoon, and we also have the threat of hawks and eagles. I would love for my chickens to free-range, but I am scared they will get picked off. I wouldn't mind building an attached run with a wire top but I also want my coop to be mobile. I will only have 3 or 4 hens with 1 rooster so it will not be a big coop. Any advice/ideas on a design for mobility and safety?