Every GOOD rooster I have ever had has gone into nest boxes to encourage pullets to lay. All that tid-bitting call, lots of turning around, etc. The funniest was when a black Jersey Giant did it - he actually got a girl to get in with him, but he was ay the back all scrunched up and I laughed so hard when he had to maneuver his way back from behind her and out of the nest box.
All of them exited these nest boxes with their masculinity intact.
Bird is just a great roo, that's all!