I built my coop this summer to fit larger breeds of chickens (buff orpington and light brahmas). However, after losing several birds to predators I accepted a gift of three bantam hens from a friend. The bantams are clearly scared of my bigger birds and they've retreated to sleeping in the nesting boxes and roosting on the lip. All of the birds are young so the bigger birds haven't started laying yet but they should any day now. The lip on the front of the nesting box (to keep the straw in) is a not quite a half inch wide strip of plywood so I didn't think any bird would be comfortable roosting on it but these bantams won't roost on the big perches (2-3 inch wide limbs with bark on from a fallen tree). There are three levels of perches but even when I put the bantams on the smaller perch below the big birds after dark they'll be in the nesting boxes come morning--with lots of poop to show they've been there awhile. Here are my questions. 1. Can I convince the bantams to quit sleeping in/roosting on the nesting boxes? 2. Will my bigger birds lay eggs in the nesting boxes (two boxes, each 17"W by 12"H by 15"D if the bantams are in there? Any suggestions are much appreciated!