Get some shade cloth, or a tarp, up pronto......they need shade the deeper and darker the better.Any tips for keeping my chickens cool? I have them a larger enclosure, but there is no natural shade and these past few days have been hot. I've noticed them with their beaks open
Dampening ground a bit in the shade to cool the soil, they will dig into it and lounge.
I freeze rinds and seeds of melons and other veggies to put out in late afternoon along with a shallow pan of water with ice cubes to drink and wade in.
Panting and wings out is how they cool themselves and not necessarily of concern,
lack of movement when stimulated(with treats) is when you need to worry about heatstroke.