So, in scrounging through the basement for something to use for my chickens to access their coop (it's 2 feet off the ground; pop door is about 1 1/2 feet above the ground), I happened across a long narrow piece of plywood with 1x2's attached!! I had torn it out of the back of a pantry cupboard when doing some renovations, and the 1x2s were shelf supports! My only question is: the 1x2s are spaced about 10 inches apart -- Is that close enough together to accommodate the chickens, or should I add more 1x2s in between each pair that's there now? Note: the ramp/ladder will be about 4 1/2 feet long to rise the 2 feet to the coop -- I'm choosing a gentle incline for aesthetics -- to match the slant of the diagonal bracing of the coop base structure.