my rooster is not eating, he's disoriented, not crowing and lays on the ground
You should ask your vet. It may be something he ate. Or he may be ill with something. But only a vet would know. I know it's an expense, but you NEED to know the cause in case it's something that can spread to the other chickens.
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Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them