Trumpeter Swan 21 American Black Duck 5 Bufflehead 8 Common Merganser 56 Red-breasted Merganser 9 Ruffed Grouse 1 Common Loon 2 Cooper's Hawk 1 Barred Owl 1 Hairy Woodpecker 1 Pileated Woodpecker 1 Common Raven 2 | Cooke Dam Area, Io |