Help!!!! My chickens have colds! They are sneezing and my special rooster that is normally very aggressive is pitiful. I bought some vetRX I think it is and have been putting that on him. I cleaned his nose and removed all the gunk. This is serious because these chickens are my 12 yr old sons who brought here from his daddy's after his daddy got killed in a tragic motorcycle accident three months ago. Please give me any suggestions