I have some questions about my chicken tractor that I am in the midst of building. I spend probably twice as long as most others standing there trying to figure out how to build a perfect problem free coop, and then 4 times longer trying to figure out now how to do it with what is lying around... we have never had chickens, and we are starting with a few basic pullets. I do have some questions that I haven't found in the BYC search engine (though I imagine they have all been asked). First let me describe the coop and then please let me know if my goals are unrealistic or not... Coop Description: (already framed in at this point) 4'Wx10'Lx2'H run. 4'x4' wide coop on top of run with a pitched roof of 3' in the back rising up to 4' in the front. 2 nesting boxes added on to the back. Random Questions: 1. With hardware cloth in the windows for ventilation, how do I keep rain from getting inside them? Maybe with a hinged shutter that opens to the top of the window? 2. Someone gave me some corrugated plastic that is light, but feels a bit flimsy; do predators ever rip the roof off coops? The back of the roof is 4 1/2' off the ground. 3. By installing drinking nipples in PVC inside the coop, will they leak when the coop is tipped a little to move it to the next spot? (I need a spill proof water and feeder design when moving coop) Here are some of the things I am trying to keep in mind. Objectives: Portable chicken coop (we rent so we don't want to permanently build something) Light but sturdy basic necessities inside coop (auto water and food) with water in the run too. (will add on removable room for overwintering birds) predator proof (we live out in the country and we have them all) Auto feeder, water, and someday door opener. (I have seen some different ideas that I think I could utilize that would be streamline inside) Able to leave chickens alone for a day or two if we go somewhere. Thanks for any help.