yawn

We have three chickens and I have noticed that one of them is quite often "yawning". Normally she does it only once but in the video she did it a couple of times in a row and more exaggerated than other times. Then there is the sneezing. All of our chickens have little sneezes where you can see...

Please help! Is this normal? Video👇🏾

Hi my 3 months old cock pants in the summer heat but yawns a lot under the fan, but when i hand fan him with paper he stays cool what to do?(sorry for bad grammar)