New York’s Long Island was once synonymous with “duck” in the culinary world. Now it may lose its last commercial farm. The avian flu outbreak that has led to the slaughter of millions of birds at U.S.

The United States has reported its first outbreak of H5N9 bird flu in poultry on a duck farm in California, the World Organization for Animal Health (WOAH) said on Monday. U.S. authorities also detected the more common H5N1 strain on the same farm in Merced County,

The highly infectious H5N1 strain has caused outbreaks across the country. Now, Long Island’s last duck farm must kill its entire flock and may go out of business, its owner said.