Fire Ant Farm
Get off my lawn
It's really hard to say not being there looking at your birds. But for me, and for other folks I know who live where it gets really hot, a little panting is not uncommon. I read someone on BYC saying that any panting was a sign of a bird in severe distress and that you had to act immediately - if that were the case, all my birds would have been long dead, so I found that a bit ludicrous, and other folks in Arizona, etc., also laughed at that. That being said, mine still walk around and otherwise act ok - just wings out and some panting/mouth open. (And, for what it's worth, the S&G pullets were fine, there was a rim of water in the lip of the waterer, it was just good I refilled it then.) If in addition to panting your birds seem to be acting unsteady or in distress, you probably want to act. (Gosh, they must have developed a big fat layer to be too hot at those temps, though - but some breeds do more poorly in heat than others.)That's crazy. I've been meaning to ask you, to what extent is panting normal in birds? My birds are having some trouble... It's been getting into the 80s and they're panting like a golden retriever on steroids. They have shade and cold water available, but I'm worried about them... Especially the older gals. Seems like they're about ready to keel over from heat stroke.
Give them cold water to stand/walk in, and if you notice one looking uncomfortably hot, you can start by holding her with her feet and legs in the cool water - in my experience, that cools them down well and have had them stop panting while we stood there having a foot soak. If you REALLY think one (or more) is in trouble, fill a 5 gallon bucket with cool (not cold) water and dunk them. On really hot days you can have the bucket filled and ready just in case.
I can't remember if I posted this earlier, but this is Lissa cooling her feet:
I think The Chicken Chick has a good article on hot weather stuff.