My Mum used to sing it to me and my brothers and sister in the 1960s,her version was, we keep chickens in our back yard, we feed um on Indian corn, some lays eggs, and some lays straw, and some lays nothing at all. Oh, cockadoodle cockadoodle, up the leg of your drawers. Auntie Mary had a canary up the leg of her drawers, when she farted down it darted and flew out the kitchen door.