I'm a proud pullet owner for 17 days (chooks are 16 weeks old) and my girls have been sleeping in their nesting boxes, not the perch (same level as boxes) but, oh my goodness, they do so much poop!!! I thought this must be normal, never having chickens before, but reading through the threads, most people dont like messy nesting boxes. so my questions are: 1. Can I block off the nesting boxes during the night so they roost on the perch? 2. are they old enough to roost on the perch?