The role of wild birds in the transmission of the highly pathogenic (HPAI) strain of the H5N1 avian influenza virus currently remains unclear. The primary mode of H5N1 spread in Asia ap
Bird migration is only one possible route of introduction of highly pathogenic avian influenza (HPAI) strain H5N1 into North America.Illegal smuggling of birds and poultry products, travel by infected people or people traveling with virus
Migratory birds usually travel the same routes in their annual migrations. In the Northern Hemisphere, birds begin moving south during August and September of each year.
Yes. In May 2005, highly pathogenic avian influenza (HPAI) H5N1 was detected for the first time in wild birds at Lake Qinghai, in China, where bar-headed geese (Anser indicus) died.
There are no documented cases of wild birds directly transmitting avian influenza to people, and there is no indication that waterfowl or other wild birds hunted in the United States carry highly pathogenic avian influenza (HPAI) H5N1. 
Avian influenza viruses have mostly been detected in wild waterfowl (ducks, geese, and swans) and shorebirds (wading birds), gulls, and terns.
Pandemicflu.govUSGS National Wildlife Health CenterUSGS Alaska Science C
The USGS actively monitors for Avian Influenza (Bird Flu).