How did you get on with cervical dislocation? Did you find the method easy?
This is probably going to seem rather strange but eating the dead bird can help.
Like it or not we are by nature an omnivorous creature and until a system was developed where others killed out food for us, having to kill through hunting or farming was common.
The huge disadvantage in my opinion of the modern system of food supply, particulary when it comes to meat is we have become divorced from the reality of where our meat comes from and insensitive to it's keeping conditions. In part this has led to the over consumption of meat. There are not usually feeling of remorse or guilt from eating a prepackaged piece of meat bought from a supermarket.
If people had to kill the meat they eat perhaps we as a species would have more respect for the creatures we eat and treat them better while they are alive.
Eat the rooster and be thankfull for what he has provided for you.