I posted about a week ago when we lost one of our pullets to bronchitis. After losing her we discovered we had 3 other sick birds. After giving injections of Tylan 50 for 5 days we also gave them Safeguard and Corid. Two of the three birds seem to be almost back to normal. The third bird, my silkie pullet seems to be worse. She is still eating and drinking on her own. However, she's all puffed up and barely moves. Her breathing is very heavy and she also has what looks like foamy droppings stuck on her feathers under her vent. Since she has already had Tylan, Safeguard, and Corid, I'm not sure what else I can do. Are there any other illnesses she could have? She's been off all medications since Wednesday the 24th. She's probably my favorite out of all the chickens and I would be devastated if I lost her.