I'm new to raising chickens (my chicks aren't even old enough to go out in the outside hutch I assembled for them). Rather than trust my 'carpentry skills' I bought a prefab (you assemble) Chick-N-Cabin by Ware Manufacturing. I live in San Francisco area and our temperatures are faily mild. The only question I have about the design of this coop is that the upper roosting bars on the upper floor ... The upper roosting bars sit right across from the hardware mesh and I was wondering if this would be too drafty for the chickens? Or will the chickens crawl into the covered area on the upper floor (where the water and feed will be located) if they get cold? The second question I have, is when the upper floor board is removed to permit the chickens access to the lower area of the pen (where the lower roosting bars are), there is no ramp to get back to the food again. I guess chickens will just fly themselves up to the level if they need to ? BTW, I called the manufacturer about the 'heart latches' (they pivot to a precise position to unlock) asking about the 'latches' and predators. The fellow in the design area said that since both latches must be pivoted precisely to identical positions to remove a panel that raccoons should not be able to do that. I am not that convinced and am thinking about adding supplemental latches to the design. What do y'all think about the 'heart latches'? They look cute, but I'm not certain how secure they are ( we DO have raccoons and possums in our part of the city, come through our backyards).