Does anybody know how to build a chicken tractor or chicken coop? any good websites?

Question:i am wanting to build a chicken tractor or small coop for our broilers but dont exactly have a real good idea. where do i start? we used to always have our chickens in our barn and now our barn is gone. any good websites?

Answers:
IIRC, www.MotherEarthNews.com had a plan. Check their archives.

Also, Joel Salatin and Polyface Farms of the Shenandoah Valley in Virginia, were profiled in part of the book "The Omnivore's Dilemna" by Michael Pollan (2006) - a very good book.

Joel has written many articles in several magazines, and has posted an extensive resource list here:
http://polyfacefarms.com/library.aspx...

You might be able to find ideas or plans for a tractor.