[davescatt]

Hi, my friend and I bought 12 brown pol chickens each about 8 months ago, about 2 months ago mine are only laying 2/3 per week, but before that I was getting between 10/12 eggs per day, and he is still getting 10/12 eggs per day. we got our chicks from the same farm at the same time. they don't have any mites and they are fed laying pellets and corn every day and their pen is warm and always clean, we keep them on our allotment so why was mine stopped laying. Cheers. davescatt.

[joyfull]

Have a good look around their run - they could be hiding them.
Also could a two legged predator be nicking them?
Another thing to thing to think of is that all hens are hatched with a finite amount of eggs and once they are gone then that is it - yours if they have stopped laying will continue to lay for longer 

Have you wormed them? If not can I suggest you buy some Flubenvet and now worm them 

[ANHBUC]

I would do as joyfull says and worm them.  I would also cut out or reduce the amount of corn you are feeding them.  Just give them a small amount in the late afternoon.  They say a fat hen does not lay so if they are eating too much corn that could be the cause.  The layers pellets are made to have a full and balanced diet for them.  Dark green vegetables will give them something to occupy them if they do not have access to greens and it helps them to absorb calcium.