I've been giving our girls some variety - they've only been getting pellets, but after a rather wet day recently, I rediscovered their love for wet mash - the pellets got mushy and they wolfed them down!
So now, I offer both dry pellets and a bowlful of wetted-up pellets, which are mixed to the consistency of coarse pate. They seem to be preferring the wet mashed up pellets right now, but they've gone off them before - they'll go off them again I'm sure! It's no odds to me - both foods are identical - even if they don't realise it! And the good thing about the wet mash is that they don't seem to waste much - and contrary to everyone else's experiences, I find they waste far more pellets. They scatter them all over the floor and then ignore them. They will only eat the ones that are still in the feeder, the cheeky girls! The wet mushed-up pellets, on the other hand, get cleaned up, right to the last little morsel!
It does seem to help in the hot weather to give them a moist food, made with cold water and/or cold milk. They seem to get some relief from it.