Last night, I noticed that my Rooster's crow wasn't quite as loud as it normally is. This morning, it's definitely quieter. The first part of his crow sounds normal, but the last syllable is normally *really* loud and today it's much less pronounced. If he was a human, I'd think he had a sore throat. He seems healthy otherwise, although has been a bit stressed in the last week by the introduction of some new hens (they're in a separate run next the main run). Is it possible that he's sick? I don't know what else it might be.