Breathing Heavily

[Quail_Guy]

My chicken has been breathing heavily for a couple weeks. It shows no signs of illnesses, it's running around, eating, and drinking with the others. The other members of the flock have not contracted any breathing problems from this chicken at all. What can I do to help it?

 

[HollowOfWisps]

What breed? How hot is it there?

Edit: I ask because we had a blizzard last week and today it’s now 80F. All of my heavy breeds are panting because of the drastic temp change. Even my horses are chugging water and standing in front of the fans.