This has been a long time coming for us where we will have a hen go from finishing out one brood to completing another in the house so kids and I can track pretty much everything that goes on. Hen just weaned two chicks and started making the sound (recorded) that advertises she is coming into lay and looking for a nesting site. I went out and got rooster. Hen crouched soliciting him to mate. Immediately after that he started to look for nest site for her and doing his set of sounds and behaviors as well. He will stay in house until first egg is laid then will only be in for conjugal visits.