I have these half dozen Cortournix Quail in a twenty gallon long tank in our computer room. One of them is almost constantly making noise. It stands as tall as possible and makes this chirping noise for long periods of time. None of the others even seen to make noise. It is also the smallest in the tank and not growing at the same prodigious rate as the others. Is this normal baby quail behavior? Is it defective or sick? I've never raised these guys from hatchlings before and don't know if this is something I should be concerned about or not?