Hot Hens

Hi everyone.
It's ages since I've been on here...thought I'd got the hang of hen keeping up til now, but am wondering about this hot weather we're having.
Should I be doing anything special for my girls?
They've got fresh water everyday and an extra dish of it hanging on the side of their run.
They aren't eating many pellets but gobble up fresh food.
I sprayed down part of their run with cold water and they seemed to enjoy scratching in the cool, damp chippings.
One of them seems to spend a lot of the time with her beak open. I've only noticed them do this if stressed. Is she doing it to try to cool down?
Has anyone got any suggestions of other things I could do to help them get through the heat??
Thanks in advance

i make mine mud pools and they love it  leave the hose running in a part of the run that u dont really need to walk on an give them a lovley massive puddle . i lefted mine running into the water tough the other week by mistake an i had 22 very happy birds now i do it daily .

Hi another way to keep them cool when its hot is to freeze a two litre bottle of water and put that into the pen / coop  outside they will lay against it , inside the coop it helps to bring the temp down if the coop gets hot.

cold water bottles for hens! love it!

Absolutely, my 4 girls and even the 3 babies have been holding their wings out for the last week! Obviously allows in a nice cool breeze 

my girls are acting like that and yes its been worrying me to death , although mine had lice they are being treated an due a second attack of spray an powders within a few days so i am asumming they aint helping them but so far they look clean .

but tonight i saw 2 sitting down in the run sleeping with thier wings down so now they are worrying me  does it ever stop .