Do you have a pet bird? You’re not alone. According to a recent national survey, captive birds are the fourth most popular pet after fish, cats and dogs. If you have a bird in your household, understanding signs of a health emergency is important. A sick bird will often appear sleepy, or huddled; its plumage may be fluffed and it may appear thin, lethargic or have a loss of appetite. .On this show, Dr. Darryl Heard, a zoological medicine specialist, will discuss bird emergencies and when to seek veterinary help.