Heat stroke is what I figured too, thanks. We have had temperatures over 100 degrees. Now I am worried again, though, because I have since placed even more water around the coups and fill them every morning with fresh, cool water so that water is readily available no matter where the chickens...
My healthy mother chicken was found dead one afternoon. There were no symptoms or signs prior. She had hatched and incubated five chicks that are now two months old so she was getting back into socializing with her adult flock and was doing just fine. She was also the "top" of the pecking...