The Michigan Department of Natural Resources believes avian flu was the cause of death for dozens of birds at Dune Harbor Park near Muskegon.
Samples were collected from the birds a couple of weeks ago and were brought to the DNR's wildlife disease lab for testing.
Megan Moriarty, a wildlife disease specialist with MI DNR, says they received confirmation one of the birds had highly pathogenic avian influenza.
However, another bird tested negative for bird flu.
Moriarty says based on the one positive test and also the knowledge bird flu has been found in the area, its highly likely the deaths were caused by the virus.
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