My Amber-Link hen has lost her voice. She cackles and I barely hear her at all. It's been going on for about 2 days. Several days ago she had a respiratory issue and she sounded like she had mucus in her throat. I had it had cleared up and she was ok but now this. I have her isolated in my garage with a heat lamp, food, and water. She eats, drinks and acts normal. She does lay an egg every day.