My chicks do that sometimes too. They're 2 months old right now. They kind of squat on the ground, let their wings droop, and have their beaks hanging open, right? I make sure each one gets a little water, and if its really hot I'll let the hose run near them, and let them get wet if they want, that sort of thing.
Hens go broody when you don’t want them to… and won’t go broody when you do. 