Hello all! I've got 5 pullets and a cockerel who are refusing to use their roosting bars. They tend to pile up in the far corner of the coop at night instead of roosting. I have their nesting boxes blocked off for now so they won't get in the habit of using them, but they are getting closer to the age they might start laying, and I obviously will have to open the boxes soon. They are about 15 weeks old at this point. Any tips? They are sleeping in the far corner of the coop where it is really difficult to climb in and grab them without major disruption.