I have this 4 week old silkie with a crusty beak. I cleaned it off with a warm cloth but she has mucus in her beak. No sneezing or nose discharge or any other symptoms. I lost 3 chicks to what I thought was a respiratory infection and treated everyone with denegard. They seemed to be doing okay and then I found this. Today I also found blood in one of the droppings (not hers) so I am treating with corid. Everyone else seems to be doing fine. Plz help.