Migratory waterfowl and ducks are hosts birds who can carry viruses that cause avian flu. These host birds can spread the infection to domesticated birds such as chickens, turkeys and geese. People develop avian flu from contact with infected poultry and surfaces contaminated by sick birds. People can also develop avian flu from direct contact with another person who has avian flu. A synthesis of the details in the document, Avian Flu with the information in How Does Avian Flu Spread? suggests that 4x the United States has allocated more funds than any other country. chickens, turkeys, and geese are the migratory wildlife hosts of Avian Flu. monitoring migratory birds is an important part of efforts to control Avian Flu. D monitoring program expenses is an important part of efforts to learn about Avian Flu. Sign