Rooster with a half swollen face

[Alijustis]

Hi, I have a rooster who I got from a friend last summer. I just noticed this today, but half of his face is swollen, the other half is completely fine. He’s the only chicken with swelling and I have no clue on what to do or how to help him.

The first photo is the non-swollen side and the other photos are the swollen side.

 

[ThePhoebeFive]

Maybe he was bitten or stung by something? Is he acting normal otherwise?

 

[Alijustis]

Maybe he was bitten or stung by something? Is he acting normal otherwise?

He’s acting completely normal, the only abnormal behavior I saw was he was like hiding the swollen side of his face from me, but that’s about it

 

[ThePhoebeFive]

I'm guessing he probably got bitten or stung, then. I don't know if there's anything you can do about it.

@Eggcessive, @Wyorp Rock

 

[Eggcessive]

Have you added any new birds to the flock in the last few weeks? It could be swelling from a sinus infection and conjunctivitis from a respiratory disease, such as MG. But a peck or sting might be a possibility. Watch for any bubbles or crusty drainage from the eye, nasal drainage, crackles while breathing, or gasping.