[chickadee11]

Hello, more advice needed I'm afraid.  I have 2 ex bats about 2 1/2 yrs old and a Rhode Island Red which we found.  The Rhodie (Roxy) normally lays every day but the other two are less frequent, probably averaging about 15 eggs a week in total from the three of them.  Suddenly the egg production has slowed down massivley, we've only had about 6 eggs this week and only 2 in the past 4 days.  They are also very skinny (although the ex-bats always have been).  I haven't changed their food, they're on layers pellets.  Plus I give them about 1 1/2 egg cups of corn in the afternoon.  I sometimes put Apple Cider Vinegar in their water but that's about it.  They're in a large pen and seem happy enough, still dusting themselves and sunbathing in the pen etc. 
Any suggestions as to the problem?
It might just be the heat but I thought I'd ask the more experienced of your what you think.
C xx

[joyfull]

actually 15 eggs a week from ex batts aged 2 1/2 and another bird of unknown agewas pretty good going. the weather could have something to do with it but it could also be their age.
When did you last worm them? and with what?

[chickadee11]

Oh blimey, now you mention it it's been about 3 months since I wormed them!  I'll start it tomorrow.  Normally I use Verm-X about every 6 weeks but I also have some Flubenvet (I think that's what it's called) so maybe I'll use that this time as it's been a while.  Can't believe I forgot...thank you for reminding me.

I know I've been spoilt with the number of eggs I've had off them...my friend gets about 3 a week from 2 chicks!  But I am a worrier and any change in them I get concerned.

[joyfull]

make sure you always use flubenvet as this is proven to work unlike the herbal stuff. This may be the reason or it could simply be their age 

[chickadee11]

okey dokey, will do. Thank you

Now have a chicken who may have been sitting on a perch in the hen house all day.  She looks ok, bright, alert etc.  Could she be broody?  she's one of the ex-bats.  Thought she was ill but she doesn't look ill.