No phil you have it muddled. Say you race 8 cocks, your middle compartment has 4 nest boxes, in both sections with v perches the cocks stay all week, they both are let out separated and trapped in there own v perch section. Friday evening afternoon is the only time they exercise together, and the trap into the middle compartment, where they have reared there young birds no hens are present on a Friday, they'll fight in the boxes but you must put them in separate baskets. There box is there domain. On a Saturday they trap to the middle section however the first cock home to his box goes in with the hen the later cock sees the cock and his hen for a few minutes and is Placed back to his section however the cock who came first gets his hen till late evening.