So I have a 4-5 month old Rooster, I don't exactly know his breed. He's black with a white afro and head, and an arched skull. It was natural, there were 3 others of the same breed that had it. Yesterday I noticed he was acting strange, but I didn't really see anything to show true sickness. I just went out today, and he was having a hard time walking or running from me. I grabbed him before he could get going, and this is what I've found: His head is shaking a bit, and he's holding it low. It keeps drooping like he's falling asleep. He has a completely empty crop save for a bit of the grit that we give them to help digest. He keeps moving his beak from side to side and clacking it like it's bothering him. He's really lethargic, doesn't want to move, and he keeps his eyes closed like he's trying to sleep. He only opens them when I bother him. He's stepping on his own feet, and it's tripping him up. He can't keep his legs apart right. His poop is really small, but solid and light brown with a dash of white there. It might be a bit too solid, like he was dehydrated? His waddle is much paler than normal, though it's still red. His breathing is a little bit congested, like he might have a cold? I'm not sure. He will suddenly stand up, and spread his wings, lowering his head, and just stand there for several seconds before sitting back down. Could he be seizing? He has his mouth open sometimes and just sits there He's falling to the left side the most, and forwards like he's top heavy. When he tries to eat, he half misses what he's trying to get. Everything else looks pretty normal with him, his feathers are well kept, his chirps sound normal, he doesn't have runny eyes or nose, there's no sour smell from his mouth to hint at Sour Crop... I've checked him for mites and lice, he doesn't have that, there's no poop stuck around his vent, he's not swollen anywhere. Here's just the other information I have just about him. He's 4-5 months old. He's been living outside with a Bantam Frizzle Coachin partner for about a month or so, though he's been going outside with two of the frizzles for over 2 months. After maybe 20 minutes inside with me dribbling olive oil and water down his throat, he's pecking a bit at my legs, and looking a bit more alert and interested in things. He's the biggest of the chicks, though he's smaller than all my hens except for one outside. I've fed him olive oil and water mixed together, maybe 10 dropperfuls? He's trying to eat a mash of their crumble, water, dried mealworms, and olive oil right now, and is getting a little bit down. He's sitting on my legs like he never does, and isn't moving away as much as normal. If anyone has any suggestions, that would be really great. His name is Clarus, and he's a very sweet boy that I want to save. I've had other adult chickens die of similar symptoms to what he's got, but this is the first time I'm trying to seek help.