I have a Buff Orpington Rooster who all of a sudden sounds very high-pitched when he crows. He's about five months old, but he's been crowing for a while now so his crow sounded pretty normal. This only started a couple days ago. His voice in general seems higher. Any idea what's going on? He seems perfectly fine otherwise. He eating, drinking, mating, etc. His comb is red and upright, and his feathers are nice and shiny.