cockeral to be shortened to cock
Cock isn\'t short for cockerel. A cock is a male over 1 year of age and a cockerel in under.
Cock is the official term for mature male chickens according to the APA. It is used by breeders, fanciers, exhibitors, etc. Rooster is a newer name for a cock and somewhere along the line backyard chicken keepers started shortening it to \"roo\", as near as I can figure out. It took me off guard when I first heard it and \"kangaroo\" was the first thing that came to mind. I guess one advantage to it is it can refer to either a cockerel or cock, but so does \"male\".
I find myself shortening words like \"information\" to \"info\" and I\'m sure we all do it with many words.
In the world of breeding and exhibiting \"rooster\" is a colloquial term. I\'ll use the term rooster in conversations with folks that aren\'t into poultry, but I try to stick with the accepted names of cock, hen, cockerel and pullet when conversing with my chicken friends.