Couldnt find plans anywhere on internet or books so I took my laptop to the barn and used the pictures to help build it. All material was 1 x 3 to make pen very light weight. Basic framework of all the sides. One 10' long the other 12' 4 sides put together Bracing is the first key to making it sturdy Front view of framework Side view Very lightweight siding or roofing. Found this out after buying tin. THE H**E D***T carries this. Finished product Finished side view Front View Hope this helps anyone out. I sure could find any plans or detailed pictures of this anywhere. This is a close copy of the pen that Joel Salatin raises his Cornish X in. He has Pollyface farm in VA. He was the natural farmer on Food Inc the movie and is also in the new movie Fresh The Movie coming soon. Im not advertising for him but I whole heartly believe in his way of thinking about raising meat animals naturally. This is a 10 X 12 pen and holds around 100 birds.