Hi there, hope you are enjoying BYC!
Unless your chick came sexed as a pullet... there is 50% chance it will be a cockerel. And do you mean Cochin, as in cute little feather legged chick? A gold laced Cochin would be awfully pretty when it's mature feather pattern comes in!
Did you get more than 1? They like and need friends as they are social creatures.
Do you have other chickens or have you raised chicks before? Using a formulated chick starter feed is important as well as providing warmth and fresh (poo free) water.
Pics always welcome, and even encouraged!