There are over 260 different confirmed species sightings of birds that live in and pass through the Horicon Marsh. Here is my list of 123 birds I have been able to photograph so far in the marsh. I don't count them unless I get a clear picture. Almost half-way there!
Wood Duck Common Merganser
Mallard Red-Breasted Merganser
American Black Duck Hooded Merganser
Blue-winged Teal Buffflehead
Cinnamon Teal Ruddy Duck
Northern Shoveler Canada Goose (tough to get that one!)
Gadwall Snow Goose
Green-winged Teal Tundra Swan
American Wigeon Mute Swan
Northern Pintail Pie-billed Grebe
Canvasback American White Pelican
Redhead Double Crested Cormorant
Ring-necked Duck Ring-billed Gull
Greater Scaup Herring Gull
Lesser Scaup Black Tern
Common Goldeneye Forster's Tern
Great Blue Heron Sandhill Crane
Whooping Crane Great Egret
Green Heron American Bittern
Least Bittern Black-crowned Night-Heron
Sora Common Moorhen
American Coot Wild Turkey
Turkey Vulture Northern Harrier
Sharp-shinned Hawk Red-tailed Hawk
Rough-legged Hawk Bald Eagle
American Kestrel Perigrine Falcon
Killdeer Greater Yellowlegs
Lesser Yellowlegs Solitary Sandpiper
Semipalmated Sandpiper Least Sandpiper
Wilson's Snipe American Woodcock
American Avocet Black-necked Stilt
Mourning Dove Great Horned Owl
Belted Kingfisher Hairy Woodpecker
Downy Woodpecker Northern Flicker
Purple Martin Barn Swallow
Tree Swallow Ruby-throated Hummingbird
Eastern Wood-Pewee Yellow-bellied Flycatcher
Least Flycatcher
Willow Flycatcher
Eastern Phoebe Eastern Kingbird
Northern Shrike Black-capped Chickadee
White-breasted Nuthatch House Wren
Sedge Wren Marsh Wren
Ruby Crowned Kinglet Blue-gray Gnatcatcher
Yellow Warbler Common Yellowthroat
American Redstart Palm Warbler
Yellow-rumped Warbler Ovenbird
Eastern Bluebird American Robin
Gray Catbird Cedar Waxwing
European Starling Blue Jay
American Crow Brown-headed Cowbird
Common Grackle Red-winged Blackbird (another tough one to get!)
Yellow-headed Blackbird Boblink
Eastern Meadowlark Baltimore Oriole
Indigo Bunting Rose-breasted Grosbeak
Northern Cardinal House Finch
Pine Sisken American Goldfinch
Chipping Sparrow American Tree Sparrow
Field Sparrow Dark-eyed junco
Grasshopper Sparrow White-crowed Sparrow
Song Sparrow Snow Bunting
House Sparrow Horned Lark
Ring-necked Pheasant