I'm trying to get an idea of how big my chicks will be when they grow up. I suspect my chicks are California White (although they look an awful lot like the TSC Tetra Tints that I've seen photos of). I've read that a full-grown hen of either kind will weigh 4-5 pounds as an adult hen. I'm curious how tall a 4-5 pound hen will be. I'm trying to keep my coop compact because it will move around, but I want to make sure I build the doors, nest boxes, and space above roosts tall enough for the hens to be comfortable. Although, to be honest, my coop-building is going very slowly. The chicks may be full-grown before I get the coop done, lol. When does a chick reach full size?