on another forum, someone who was selling surplus cockerels was approached by someone wanting them as sparring partners for game birds. now although I was surprised they (the buyers) were so open about it, I'm sure the poster was genuine as they couldn't work out why someone would want to put them in with pheasants! she hadn't heard of game fowl.
so please be careful, although its nice to get them new homes and some can't bear the thought of culling, cock fighting is seemingly rife atm and I know which end I would rather my cockerels met. I expect I am preaching to the converted on here but thought I would mention it.