My Marans cockerel had a fight through the netting with one of the Orpington cockerels so I brought him in overnight to give me a chance to sort out their arrangements and to check that his wounds were only superficial (stupid creature had picked the fight in the first place and then was clearly the worse off). Anyhow, whilst in the kitchen - beneath our bedroom - he started crowing at 3am, in the pitch black. And continued, and continued....he was kicked out promptly the next day (and continues to pick fights too). Fortunately we can't hear our cockerels from the house normally but I can vouch for them crowing in the middle of the night in pitch darkness!