Hi everyone. I have a bit of a mystery on my hands. Spring has somewhat sprung here in Eastern Canada after a very hard and cold winter. I recently cleaned out my coop which was pretty bad with ammonia and the like. All was going well and everything seemed to be great until I went into the coop this morning. My americauna was dead on the floor. I checked her over carefully...no outward causes of death. She was running around yesterday enjoying the sun, good appetite, drinking, lively. She was only 1.5 years old. Does an apparently healthy chicken just keel over? She moulted two months ago and had quit laying if that helps. I'd love to know what could cause this. Thanks