Not that I need another patient, but I do have one goose with a very muffled voice. She is active and talking but her voice level is very muted. No head shaking or gasping. Some of the geese do poke their bills pretty deep into muddy spots which we have plenty off with all the recent rain. They do have plenty grit and oyster shell and water buckets to drink and wash. Any idea what the voice change could indicate?