Somethings wrong with my rooster?

[Bell Street]

One of my roosters has be acting funny. He has been sitting with his head in a corner for the past week. Yesterday my other roosters attacked him to the point he laid helplessly on the ground. I isolated him overnight, but within a couple of hours this morning he was attacked again. I examined him again and found that the top of his breast-bone was exposed with no skin on it, as well as having been pecked severely.
His eyes are clear and I don't see signs of anything else.
They have a large run, but at present I have too many roosters to chickens 6 R to 8 hens. This will change soon.
If I need to put him down, what is the easiest and most humane way to do it?

 

[Kiki]

Cut his head off.

 

[Bell Street]

Cut his head off.

Any idea why this happened?

 

[Kiki]

Any idea why this happened?

Take your pick.
Any one of a different million reasons why.

 

[LizzzyJo]

I’m so sorry for this.
As for the question, for me it’s all about minimizing stress before and during. Try to not chase him to get him. Hold him calmly until he relaxes. Then dispatch in a fast manner. If you’re new to culling, my advice is to tie his wings or hold them down in some way. Ax to the head or even a large and sharp pair of garden shears work well. Watch a lot of videos and educate yourself. Don’t let your lack of education hurt him. Good luck.

 

[Painted Calls]

Welcome to BYC! I'm sorry about your rooster.

It most likely happened because there shouldn't be 6 roosters together with only 8 hens. Either get rid of 5 roosters, or put all roosters together with no hens.

Keeping a bird in isolation for 24 hours does nothing. The only thing accomplished there was knocking him further down in the pecking order and making him a bigger target.

Either heal him or put him down. I would get rid of 5 roosters.

 

[casportpony]

Welcome to BYC, sorry your rooster is injured. Can you post some pictures of his wounds?

 

[TheOddOneOut]

Omg yes.
You should only have ONE rooster for eight hens.
SIX?

 

[Bell Street]

Cut his head off.

Any idea why this happened?

Take your pick.
Any one of a different million reasons why.

I just finished the deed. When I turned him upside down to put him into the cone a lot of brown liquid smelly stuff poured out of his mouth. Any idea what this may be and is the bird still edible?

 

[casportpony]

Any idea what this may be and is the bird still edible?

The stuff that came out of his mouth was the stuff in his crop. Should be edible unless he was sick with some sort of disease. Open him up and see if he looks normal inside.