The California Department of Fish and Wildlife confirmed on Wednesday that two mute swans tested positive for the avian influenza at Mather Regional Park. Dozens of swans were reported dead at Mather Lake in Sacramento County back in late November.

MATHER — Wildlife officials confirmed that the swans found dead at Mather Regional Park in Sacramento County in November were infected with bird flu. This latest announcement comes after a month of people wondering what killed these swans. Since the original grouping of swans was tested, more have died.

The California Department of Fish and Wildlife confirmed on Wednesday that two mute swans tested positive for the avian influenza at Mather Regional Park. Dozens of swans were reported dead at Mather Lake in Sacramento County back in late November.