Why are my chickens opening their mouths

[Chick.enss]

Hello, my chickens have been leaving they’re mouth open a lot. I am wondering if they are painting or if it’s something else but i just don’t know

 

[ChickenGirl555]

How old are they?

 

[Chick.enss]

How old are they?

Just turned 6 months a couple days ago

 

[definetlydeb]

Moving food from crop is my guess.

 

[Frazzemrat1]

Where are you? Is it possible they’re hot?

 

[aart]

Could be panting from being hot....
...or adjusting crop if they are stretching out and moving their neck around too.

 

[ChickenGirl555]

I agree with @aart