My understanding is that the surgery goes better if they haven't started crowing yet and built up the muscles that get the air volume in and squeezes it to let them belt it out like that.
Idk exactly how the surgery goes, but there are small holes cut open in the air sacks or larynx of the roosters, the surgery is in their throats/airways. The vet said they got 4 different types of anesthesia, and that the ayam cemani needed 4 times the amount of anesthesia than other breeds to get the effect. They are a bit flighty, mine get handled a lot by me, but they freak out every time I go near them, but as soon as I have them in my hands, they melt and love cuddles and petting.
I love my chickens so very much, I want to keep them as long as I can, but a crowing contest is not the way that's going to happen and make for mad neighbors.
Reginald had a little complication after stitches came out yesterday the vet said, and there was a bit of air trapped under his skin, which can happen and is common. She gave him some antibiotics, and they are still under observation. My boys might come home by tomorrow afternoon.
I told the others they are coming back soon, we had a talk this morning about Boss and Reginald, and Nugget is probably going to become a capon this weekend. Nugget is a haffie, he's an ayam cemani x mottled orpington roo, I have 2 haffie pullets and 2 haffie roos. The roos are going to become capons.
I think one of my white bresse roos has yellow feet/legs, he will become a capon, as I can't breed with him. I have 4 ayam cemani roos to make into capons in the next few weeks, unless someone wants them, but they are far from perfect with white toe nails and gray tongues, and are about a month old.