Possible Heatstroke?

[itspebbl]

Yesterday, my black australorp hen, the largest hen we have right now, collapsed. She kept looking up and walking until she fell over on her back and laid there for about 15-40 seconds, sprawled out, nearly completely still. I picked her up and she started walking and eating like nothing ever happened, and has appeared fine when I check on them. She has a smaller comb them the others and it has been upper 80's and 90's. I haven't noticed her panting any more than the others, but if it isn't heatstroke, I need some help on figuring out the problem. Thanks!

 

[Eggcessive]

How is she doing today? Did you give her fluids or electrolytes after this happened? Maybe she had a type of seizure activity? With heat like you are having it is good to keep some flat wide pans of shaded water that they can stand in to cool off, and several water stations inside and outside the coop.