thanks for that!
as for the egg laying nothing as of yet!! but maybe that's due to the cold weather or moult.. what do you think? should they lay though winter? i've heard people call them black rocks over here so I think your right ! I've only ever kept show breeds and bantams before so these girls are new to me (they are huge! but gentle.) does the high production leave them with a short lifespan? if so then how long do these 'production' breeds live on average in comparison to say my polands or silkie bantams ?
thanks again!
How well they lay is dependent on care and age. How long they live is dependent upon care and genetics.
Typically, with good care, they will lay prolifically the first 2 years, usually laying pretty much an egg a day until the first molt (around 1 1/2 years), then scale back a bit the 2nd year, then noticeably the 3rd, then maybe you'll get to 1 or 2 eggs a week by the 4th and 5th.
Some do better. Some do worse.
A 5 year old commercial hybrid is usually a very old, and spent hen.
Some of mine have played out closer to 3 years of age. Many succumb to ovarian cancer due to the genetic manipulation to create such prolific layers.
I find the Black Sexlinks (our version of Black Rocks here) to do better than the Red Productions. Several of my BSL's have lived and laid well into their 6th (kept because they were smart enough to make themselves endearing.)
The commercial productions need good layer feed at all times with sufficient grit to keep up with their egg production needs. I find mine also do better on a higher protein, 18 to 20% vs. the normal 16% in the less expensive layer feed, unless you have rich forage for them. (They do seem to forage well.) They can be prone to intestinal worms, which will bring down their lay rate noticeably.
Overall good birds to keep in the flock for sustained egg production.
Don't count on any meat out of them though. They are not dual purpose.
LofMc