So, my six month old Ameraucana rooster has had thick, bubbly saliva since yesterday morning. I ran and got him some activated charcoal yesterday, thinking he'd just gotten into something toxic (they free range in our backyard). He drank some in water and had some in some watery oats I gave him to ease any throat irritation. He seemed fine after that and I figured just drinking the water helped. He hadn't been eating, but did after that. He was freaking out more than usual in response to me putting his no crow collar back on last night (I took it off when he seemed to have throat related issues.). So, I brought him in and kept him in our utility room overnight. I didn't remove the collar because I knew it wasn't too tight (a little too loose if anything). This morning I came down to find him still trying to get out of the thing. He's totally fine when sitting in my lap. He breathes fine and is calm. I've had him like this for the past 15-20 minutes.The exception being that he's still got the thick saliva and doing this swallowing motion a lot. When I first tried to let him out this morning, he was shaking his head like yesterday so streams of thick, bubbly saliva would fling out. I've had him drinking water with acv. I keep hearing this bubbly/gurgly sound from deep inside his throat. Could it be sour crop? I can't feel his crop, so I don't think it's impacted, though I'm not that experienced either. Thoughts?