He has been "down" for 3 days now and I noticed he stopped roosting about 3 weeks ago. It only accelerated quickly within the last week from being a little wobbly to being down on his legs.
I sat and watched him in the coop today and he wobbles back and forth and kind of scoots his legs lick he wants to walk, but he can't hold himself up. He was also shaking his head quite a bit but I can't tell if that's because he keeps getting shavings in his face, he's having trouble preening, or if that's a symptom as well.
No obvious signs of injury, he only lives with one hen, and those are the only symptoms I noticed. He crows from his spot and is eating and drinking ok, but has been less interested since his only coopmate has been sitting on eggs for the past 18 days. He flaps his wings and from what I can tell they don't look droopy aside from the normal "blech it's hot" stance. Poop looked normal as well.