Hello recently my flock of hens and my 4 silkies have gotten sick and are dying rapidly. I am worried that bug service came in a poisoned them. I lost 3 hens and a silkie. They get sick very quickly and start having trouble with their balance. I have treated the water now with antibiocs. I currently have 2 sick silkies and am going to the vet provided they make it that long. Some of the hens that passed away were vaccined for merricks and a couple were not. I do not have alot of chickens. I just had a pen with 4 silkies and a pen with 9 hens (now 7). The two sick silkies are moved. I do not know if they will be alive when I get home. Ideas of what is going on with them?