The first U.S. H5N9 outbreak has raised concerns as scientists warn of evolving bird flu risks—here's what you need to know about the symptoms.

It causes large growths on birds' beaks and eyes which can make them very sick. The virus is a form of avian pox - a skin disease which cannot be caught by humans. Scientists think the pox came ...

However, if you find multiple dead birds with similar injuries or symptoms, it may indicate ... aspergillosis, avian pox, ...

Some antiviral drugs, if taken within two days of symptoms, may help. "Oseltamivir (Tamiflu) is expected to be effective at treating the current avian influenza strain..." according to Conti.

It is caused by Avian pox viruses which are single ... esophagus or trachea. Other symptoms include blindness, feed refusal, lowered egg production, facial swelling. How does this disease spread?