Ah, the EE thread is the exception to the rule. I think their may be a Silkie thread also; both breeds are notoriously difficult to sex. But in general, it's best to make your own thread for your questions and photos.
Have you considered a no-crow collar if the bird is in fact a cockerel? They do not always work but they can sometimes be very effective in reducing the volume and frequency of crowing. They can be purchased premade but can also be made at home for under $10 and with little effort; all that is needed is Velcro and scissors.
No-crow collar?! I've never heard of this. I'll have to look into it! Thanks!!