As a first time chicken owner, I have just made the worst mistake. I didn't check before feeding them avocado. I lost my top 2 hens because it is apparently toxic. I am so upset with myself…..I feel terrible. I have 2 hens left that just ate small amounts since the other hens were hogging it all to themselves. Thank god for that at least…..I am just hoping that the little they ate has already passed through and they won't die today. The other 2 died within 24 hours.