Hi all, I've been sketching out coop plans on paper for weeks. One thing that makes me stumble, however, is not knowing how much headroom to allow for the girls (and possibly a roo). For example, I'm considering an ark ... so the downstairs would be grazing, and the upstairs would be nesting / sleeping quarters. How tall are standard chickens? (Think Buff Orpington, Salmon Faverolles, Sussex) How tall are bantams? (Think Pekin/Cochins, D'uccles, Silkies, Easter Eggers, Dutch) I haven't been around chickens since I was young, and I was a bit smaller then so I can't remember how big they really were! Thanks!