60 birds were recorded seen in Indiana in August in our iNaturalist sample; 5 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top birds in August

American Goldfinch

Ruby-throated Hummingbird

Great Blue Heron

Mourning Dove

Northern Cardinal

Green Heron

Great Egret

Red-tailed Hawk

Mallard

Wild Turkey

House Sparrow

American Robin
All birds seen in Indiana in August
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | American Goldfinch | Spinus tristis | Finches, Euphonias, and Allies | 394 | Aug (peak) |
| 2 | Ruby-throated Hummingbird | Archilochus colubris | Hummingbirds | 377 | Sep (rising) |
| 3 | Great Blue Heron | Ardea herodias | Herons, Egrets, and Bitterns | 345 | May (past peak) |
| 4 | Mourning Dove | Zenaida macroura | Pigeons and Doves | 218 | Apr (past peak) |
| 5 | Northern Cardinal | Cardinalis cardinalis | Cardinals and Allies | 207 | Apr (past peak) |
| 6 | Green Heron | Butorides virescens | Herons, Egrets, and Bitterns | 206 | Aug (peak) |
| 7 | Great Egret | Ardea alba | Herons, Egrets, and Bitterns | 195 | Sep (rising) |
| 8 | Red-tailed Hawk | Buteo jamaicensis | Hawks, Eagles, and Kites | 188 | Sep (rising) |
| 9 | Mallard | Anas platyrhynchos | Ducks, Geese, and Swans | 170 | Apr (past peak) |
| 10 | Wild Turkey | Meleagris gallopavo | Pheasants, Grouse, and Allies | 145 | May (past peak) |
| 11 | House Sparrow | Passer domesticus | Old World Sparrows | 145 | Apr (past peak) |
| 12 | American Robin | Turdus migratorius | Thrushes | 139 | Apr (past peak) |
| 13 | Canada Goose | Branta canadensis | Ducks, Geese, and Swans | 136 | Apr (past peak) |
| 14 | Double-crested Cormorant | Nannopterum auritum | Cormorants and Shags | 129 | Sep (rising) |
| 15 | Turkey Vulture | Cathartes aura | New World Vultures | 125 | Apr (past peak) |
| 16 | Cooper's Hawk | Astur cooperii | Hawks, Eagles, and Kites | 123 | Apr (past peak) |
| 17 | Wood Duck | Aix sponsa | Ducks, Geese, and Swans | 109 | Apr (past peak) |
| 18 | House Finch | Haemorhous mexicanus | Finches, Euphonias, and Allies | 106 | Apr (past peak) |
| 19 | Downy Woodpecker | Dryobates pubescens | Woodpeckers | 103 | Apr (past peak) |
| 20 | White-breasted Nuthatch | Sitta carolinensis | Nuthatches | 101 | Apr (past peak) |
| 21 | Ring-billed Gull | Larus delawarensis | Gulls, Terns, and Skimmers | 99 | Aug (peak) |
| 22 | Barn Swallow | Hirundo rustica | Swallows and Martins | 92 | May (past peak) |
| 23 | Red-shouldered Hawk | Buteo lineatus | Hawks, Eagles, and Kites | 83 | May (past peak) |
| 24 | Blue Jay | Cyanocitta cristata | Crows, Jays, and Magpies | 83 | May (past peak) |
| 25 | Indigo Bunting | Passerina cyanea | Cardinals and Allies | 83 | May (past peak) |
| 26 | Bald Eagle | Haliaeetus leucocephalus | Hawks, Eagles, and Kites | 82 | Apr (past peak) |
| 27 | Chipping Sparrow | Spizella passerina | New World Sparrows | 76 | Apr (past peak) |
| 28 | Red-headed Woodpecker | Melanerpes erythrocephalus | Woodpeckers | 74 | May (past peak) |
| 29 | Osprey | Pandion haliaetus | Ospreys | 73 | Apr (past peak) |
| 30 | Sandhill Crane | Antigone canadensis | Cranes | 72 | Feb (past peak) |
| 31 | Cedar Waxwing | Bombycilla cedrorum | Waxwings | 71 | May (past peak) |
| 32 | Eastern Wood-Pewee | Contopus virens | Tyrant Flycatchers | 71 | May (past peak) |
| 33 | Tree Swallow | Tachycineta bicolor | Swallows and Martins | 64 | May (past peak) |
| 34 | European Starling | Sturnus vulgaris | Starlings | 63 | Apr (past peak) |
| 35 | Gray Catbird | Dumetella carolinensis | Mockingbirds and Thrashers | 62 | May (past peak) |
| 36 | Red-bellied Woodpecker | Melanerpes carolinus | Woodpeckers | 62 | Apr (past peak) |
| 37 | Eastern Kingbird | Tyrannus tyrannus | Tyrant Flycatchers | 61 | May (past peak) |
| 38 | Belted Kingfisher | Megaceryle alcyon | Kingfishers | 60 | Aug (peak) |
| 39 | Eastern Bluebird | Sialia sialis | Thrushes | 60 | Apr (past peak) |
| 40 | Northern Flicker | Colaptes auratus | Woodpeckers | 58 | Apr (past peak) |
| 41 | Killdeer | Charadrius vociferus | Plovers and Lapwings | 55 | May (past peak) |
| 42 | Mute Swan | Cygnus olor | Ducks, Geese, and Swans | 53 | Apr (past peak) |
| 43 | Pileated Woodpecker | Dryocopus pileatus | Woodpeckers | 53 | May (past peak) |
| 44 | Carolina Wren | Thryothorus ludovicianus | Wrens | 51 | Apr (past peak) |
| 45 | Tufted Titmouse | Baeolophus bicolor | Tits, Chickadees, and Titmice | 51 | Apr (past peak) |
| 46 | Carolina Chickadee | Poecile carolinensis | Tits, Chickadees, and Titmice | 51 | Apr (past peak) |
| 47 | Least Sandpiper | Calidris minutilla | Sandpipers and Allies | 50 | Aug (peak) |
| 48 | Field Sparrow | Spizella pusilla | New World Sparrows | 50 | May (past peak) |
| 49 | Song Sparrow | Melospiza melodia | New World Sparrows | 49 | May (past peak) |
| 50 | Eastern Phoebe | Sayornis phoebe | Tyrant Flycatchers | 47 | May (past peak) |