again, meat hens tend to be a different bred from egg hens.
table (eating) grow bigger than egg producing breeds, egg producing breeds carry less meat and put more of their intake into producing eggs, they will lay more eggs than the table birds
http://www.henkeeping.co.uk/chicken-breeds.html
(Does no one on here watch Countryfile?
If you breed your own birds for eggs, you can eat the cockerels but they won’t have a lot of meat on them, also they will fight and may need separating or killing before they reach full weight.