Have a non standard silkey rooster with 2 young silkey pullets not yet laying but one should be close. The other day I herd an egg song coming from their pen, thought to myself, cool finally a silkie egg or at least a good sign one should be coming soon. So I look in the pen and the rooster is doing the whole eggs song and dance. There is no question either he is a rooster, and one with lots of crow and attitude in him. I've certainly had the EE roo half heartedly join in when layers start singing but never noticed a roo singing an egg song all on his own.