Animal Welfare Bill

I am curious about how the proposal will work. The noble Baroness, Lady Miller, made a comparison between domestic chickens used for laying eggs and pheasants. While domestic chickens lay sterile eggs, presumably the pheasants and partridges are required to lay fertile eggs because they are for breeding. What happens to the cock pheasants if the hen is kept in a cage for six months? Is the cock pheasant put in with the hens every now and again? Anyone who has observed hens in a run with a cockerel will know that he is very active.