Hello. Are you asking about Canarys or some other kind of bird? What makes you think they are sick or that they may have respiratory problems. Have they been diagnosed by an avian vet? Are they showing some kind of symptoms and if so, please describe everything as best you can. What kind of diet are they on? How old are they? How long has this been going on? Tell me where their cage is located in the house. This extra information will help me give you my best advice and suggestions. Thanks, Patricia
If I've helped, please click the ACCEPT. Even if a deposit was made, I won't get paid until you accept. A bonus is always appreciated and leaving feedback benefits us both.