We currently have 2 buff polish that are very lethargic and just breathing. We bought them at a poultry auction 5 weeks ago. they were under quarantine until last weekend when we put all of the birds that we bought into a separate part of our coop so that when we integrate them it will be less traumatic. Last night my daughter found some lice on them so we put tea tree oil on them and separated them from the rest of the flock each bird had about 5-6 drops. The 3 silkies we put about the same number of drops on and they are fine. They were placed in a dog crate in the garage. At the same time we noticed that their eyes had a yellow crust above them. So they spent the night in the dog crate in the Garage which it go down to -5C. This morning they were barely moving so we brought them in to the house to try to warm them up and get them mobile again. They still are not moving much and still are barely breathing. The crops on both of them feel empty. DW has tried to feed them but they did not eat much of it barely moving. Just lots of bugs. Before the TEA TREE oiling they were very active. Is it possible to over oil the birds. We are going to try bath them to see if that helps Below is the picture of the males eye crust.