Six Hooded Merganser Ducks Found Dead at the Outlet of Maranacook Lake Test Positive for HPAI AUGUSTA, ME — The Maine Department of Inland Fisheries and Wildlife was notified today that six hooded merganser ducks that were found dead at the outlet of Maranacook Lake tested positive for HPAI (highly pathogenic avian influenza). The National read more MDIFW News: HPAI Detected In Wild Waterfowl In Winthrop