Dead waterfowl in Miami Valley 'presumed positive' for bird flu | 31 Dec 2024 | Dead wild birds across Ohio are "presumed positive" for avian flu, according to the Ohio Department of Natural Resources. Over the last few weeks, Canada geese, trumpeter swans and one mallard have been reported dead and are being tested, ODNR's Division of Wildlife announced Tuesday. The dead birds were reported in nine Ohio counties, including Montgomery and Warren counties in the Miami Valley. They are being tested for HPAI (highly pathogenic avian influenza) by the U.S. Department of Agriculture's National Veterinary Services Laboratory.