Hello, I'm not 100%sure what is going on but given the fact that the geese and other orchard birds (some chickens and a turkey who is now dead from said sickness) are all sick right now. But the layers that they come in contact with regularly are not sick I am assuming that some wild animal or some external factor has contaminated their water. I also suspected they may have lice because one of the dead geese had little bugs crawling on her in her last hours. Ok so I am giving them vitamins, brewers yeast, tetracycline and am dusting them for lice. I also tarped over the entire pond and am providing them fresh buckets of water a few times daily. Is there anything else I can do or should look for? The only 2 bodies I examined did not seem to have anything out of place.... I am just so sad to see them ALL sick now. First think I notice is they were not quite as energetic, then a wing will droop, then two then they sit frequently then it becomes hard to walk and they are clumsy. Then they die. Being that 3 species are involved rules out species specific diseases. Only 1 bird in 10 infected seemed to recover after separation and vitamins/yeast treatment. That was a chicken. The geese now seem to be most affected. All the ones that died so far were the youngest but now the older ones are sick, too. To top it off tonight is especially cold and snowy. I hope they are ok out there. They have lost weight but there is ABSOLUTELY NO LOSS IN APPETITE. Also, stool seems normal. There is no chicken or water fowl specialist that I know of around here so taking them to the vet would not be helpful. Thanks for any knowledge you can pass on to me.