60 birds were recorded seen in Indiana in December in our iNaturalist sample; 2 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top birds in December

Northern Cardinal

Dark-eyed Junco
Downy Woodpecker

Red-shouldered Hawk
Sandhill Crane
Red-bellied Woodpecker

Cooper's Hawk

Bald Eagle
White-breasted Nuthatch

Red-tailed Hawk
House Finch

Tufted Titmouse
All birds seen in Indiana in December
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Northern Cardinal | Cardinalis cardinalis | Cardinals and Allies | 269 | Apr (past peak) |
| 2 | Dark-eyed Junco | Junco hyemalis | New World Sparrows | 225 | Jan (past peak) |
| 3 | Downy Woodpecker | Dryobates pubescens | Woodpeckers | 199 | Apr (past peak) |
| 4 | Red-shouldered Hawk | Buteo lineatus | Hawks, Eagles, and Kites | 160 | May (past peak) |
| 5 | Sandhill Crane | Antigone canadensis | Cranes | 150 | Feb (past peak) |
| 6 | Red-bellied Woodpecker | Melanerpes carolinus | Woodpeckers | 141 | Apr (past peak) |
| 7 | Cooper's Hawk | Astur cooperii | Hawks, Eagles, and Kites | 130 | Apr (past peak) |
| 8 | Bald Eagle | Haliaeetus leucocephalus | Hawks, Eagles, and Kites | 127 | Apr (past peak) |
| 9 | White-breasted Nuthatch | Sitta carolinensis | Nuthatches | 125 | Apr (past peak) |
| 10 | Red-tailed Hawk | Buteo jamaicensis | Hawks, Eagles, and Kites | 124 | Sep (past peak) |
| 11 | House Finch | Haemorhous mexicanus | Finches, Euphonias, and Allies | 123 | Apr (past peak) |
| 12 | Tufted Titmouse | Baeolophus bicolor | Tits, Chickadees, and Titmice | 121 | Apr (past peak) |
| 13 | Pileated Woodpecker | Dryocopus pileatus | Woodpeckers | 106 | May (past peak) |
| 14 | Carolina Chickadee | Poecile carolinensis | Tits, Chickadees, and Titmice | 105 | Apr (past peak) |
| 15 | Blue Jay | Cyanocitta cristata | Crows, Jays, and Magpies | 102 | May (past peak) |
| 16 | House Sparrow | Passer domesticus | Old World Sparrows | 99 | Apr (past peak) |
| 17 | White-throated Sparrow | Zonotrichia albicollis | New World Sparrows | 92 | Apr (past peak) |
| 18 | Mallard | Anas platyrhynchos | Ducks, Geese, and Swans | 91 | Apr (past peak) |
| 19 | American Goldfinch | Spinus tristis | Finches, Euphonias, and Allies | 85 | Aug (past peak) |
| 20 | Canada Goose | Branta canadensis | Ducks, Geese, and Swans | 82 | Apr (past peak) |
| 21 | Eastern Bluebird | Sialia sialis | Thrushes | 79 | Apr (past peak) |
| 22 | Carolina Wren | Thryothorus ludovicianus | Wrens | 76 | Apr (past peak) |
| 23 | Song Sparrow | Melospiza melodia | New World Sparrows | 76 | May (past peak) |
| 24 | Great Blue Heron | Ardea herodias | Herons, Egrets, and Bitterns | 74 | May (past peak) |
| 25 | Ring-billed Gull | Larus delawarensis | Gulls, Terns, and Skimmers | 71 | Aug (past peak) |
| 26 | Mourning Dove | Zenaida macroura | Pigeons and Doves | 68 | Apr (past peak) |
| 27 | European Starling | Sturnus vulgaris | Starlings | 66 | Apr (past peak) |
| 28 | American Tree Sparrow | Spizelloides arborea | New World Sparrows | 64 | Jan (past peak) |
| 29 | American Robin | Turdus migratorius | Thrushes | 63 | Apr (past peak) |
| 30 | Hooded Merganser | Lophodytes cucullatus | Ducks, Geese, and Swans | 58 | Mar (past peak) |
| 31 | Northern Flicker | Colaptes auratus | Woodpeckers | 55 | Apr (past peak) |
| 32 | American Crow | Corvus brachyrhynchos | Crows, Jays, and Magpies | 49 | Apr (past peak) |
| 33 | Red-headed Woodpecker | Melanerpes erythrocephalus | Woodpeckers | 42 | May (past peak) |
| 34 | Barred Owl | Strix varia | Typical Owls | 41 | May (past peak) |
| 35 | Short-eared Owl | Asio flammeus | Typical Owls | 41 | Dec (peak) |
| 36 | Rough-legged Hawk | Buteo lagopus | Hawks, Eagles, and Kites | 36 | Jan (past peak) |
| 37 | Hairy Woodpecker | Leuconotopicus villosus | Woodpeckers | 36 | May (past peak) |
| 38 | Northern Harrier | Circus hudsonius | Hawks, Eagles, and Kites | 35 | Jan (past peak) |
| 39 | Wild Turkey | Meleagris gallopavo | Pheasants, Grouse, and Allies | 32 | May (past peak) |
| 40 | Belted Kingfisher | Megaceryle alcyon | Kingfishers | 32 | Aug (past peak) |
| 41 | Bufflehead | Bucephala albeola | Ducks, Geese, and Swans | 32 | Mar (past peak) |
| 42 | Common Goldeneye | Bucephala clangula | Ducks, Geese, and Swans | 31 | Feb (past peak) |
| 43 | Mute Swan | Cygnus olor | Ducks, Geese, and Swans | 30 | Apr (past peak) |
| 44 | Northern Mockingbird | Mimus polyglottos | Mockingbirds and Thrashers | 30 | May (past peak) |
| 45 | Gadwall | Mareca strepera | Ducks, Geese, and Swans | 30 | Mar (past peak) |
| 46 | American Kestrel | Falco sparverius | Falcons and Caracaras | 29 | Dec (peak) |
| 47 | Snow Goose | Anser caerulescens | Ducks, Geese, and Swans | 26 | Jan (past peak) |
| 48 | Northern Shoveler | Spatula clypeata | Ducks, Geese, and Swans | 26 | Mar (past peak) |
| 49 | Ring-necked Duck | Aythya collaris | Ducks, Geese, and Swans | 25 | Mar (past peak) |
| 50 | American Coot | Fulica americana | Rails, Gallinules, and Coots | 24 | Apr (past peak) |