The following link lists reports on Avian Influenza in the scientific literature:

beginning September 2005

The following link to the Infectious Diseases Society of America (ISDA) describes the disease, provides information about key outbreaks in avian populations, and provides information on prevention, treatment, and outbreak control in birds:
Avian Influenza (Bird Flu): Agricultural and Wildlife Considerations

The Ornithological Council provides useful factsheets on bird flu.

National Geographic also provides useful information on bird flu.