60 birds were recorded seen in Michigan in October 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 October

Mallard
Canada Goose

Blue Jay

Wild Turkey
Downy Woodpecker
Sandhill Crane

Dark-eyed Junco

Great Blue Heron

Red-tailed Hawk

White-crowned Sparrow

Black-capped Chickadee

Yellow-rumped Warbler
All birds seen in Michigan in October
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Mallard | Anas platyrhynchos | Ducks, Geese, and Swans | 435 | Apr (past peak) |
| 2 | Canada Goose | Branta canadensis | Ducks, Geese, and Swans | 420 | Apr (past peak) |
| 3 | Blue Jay | Cyanocitta cristata | Crows, Jays, and Magpies | 416 | May (past peak) |
| 4 | Wild Turkey | Meleagris gallopavo | Pheasants, Grouse, and Allies | 377 | Apr (past peak) |
| 5 | Downy Woodpecker | Dryobates pubescens | Woodpeckers | 372 | Apr (past peak) |
| 6 | Sandhill Crane | Antigone canadensis | Cranes | 362 | May (past peak) |
| 7 | Dark-eyed Junco | Junco hyemalis | New World Sparrows | 355 | Jan (past peak) |
| 8 | Great Blue Heron | Ardea herodias | Herons, Egrets, and Bitterns | 332 | Aug (past peak) |
| 9 | Red-tailed Hawk | Buteo jamaicensis | Hawks, Eagles, and Kites | 323 | Apr (past peak) |
| 10 | White-crowned Sparrow | Zonotrichia leucophrys | New World Sparrows | 318 | May (past peak) |
| 11 | Black-capped Chickadee | Poecile atricapillus | Tits, Chickadees, and Titmice | 314 | Apr (past peak) |
| 12 | Yellow-rumped Warbler | Setophaga coronata | New World Warblers | 303 | Apr (past peak) |
| 13 | White-throated Sparrow | Zonotrichia albicollis | New World Sparrows | 298 | Apr (past peak) |
| 14 | Ring-billed Gull | Larus delawarensis | Gulls, Terns, and Skimmers | 286 | Jul (past peak) |
| 15 | Bald Eagle | Haliaeetus leucocephalus | Hawks, Eagles, and Kites | 273 | May (past peak) |
| 16 | Red-bellied Woodpecker | Melanerpes carolinus | Woodpeckers | 271 | May (past peak) |
| 17 | White-breasted Nuthatch | Sitta carolinensis | Nuthatches | 269 | Apr (past peak) |
| 18 | American Robin | Turdus migratorius | Thrushes | 247 | Apr (past peak) |
| 19 | Northern Cardinal | Cardinalis cardinalis | Cardinals and Allies | 233 | Apr (past peak) |
| 20 | House Sparrow | Passer domesticus | Old World Sparrows | 211 | Apr (past peak) |
| 21 | Mute Swan | Cygnus olor | Ducks, Geese, and Swans | 207 | May (past peak) |
| 22 | Ruby-crowned Kinglet | Corthylio calendula | Kinglets | 207 | Apr (past peak) |
| 23 | Golden-crowned Kinglet | Regulus satrapa | Kinglets | 195 | Apr (past peak) |
| 24 | American Goldfinch | Spinus tristis | Finches, Euphonias, and Allies | 186 | Aug (past peak) |
| 25 | Trumpeter Swan | Cygnus buccinator | Ducks, Geese, and Swans | 162 | Jun (past peak) |
| 26 | Hermit Thrush | Catharus guttatus | Thrushes | 155 | Apr (past peak) |
| 27 | Wood Duck | Aix sponsa | Ducks, Geese, and Swans | 148 | Apr (past peak) |
| 28 | Turkey Vulture | Cathartes aura | New World Vultures | 147 | Apr (past peak) |
| 29 | Double-crested Cormorant | Nannopterum auritum | Cormorants and Shags | 146 | Aug (past peak) |
| 30 | Mourning Dove | Zenaida macroura | Pigeons and Doves | 141 | Apr (past peak) |
| 31 | Song Sparrow | Melospiza melodia | New World Sparrows | 139 | May (past peak) |
| 32 | Great Egret | Ardea alba | Herons, Egrets, and Bitterns | 138 | Aug (past peak) |
| 33 | Pileated Woodpecker | Dryocopus pileatus | Woodpeckers | 126 | May (past peak) |
| 34 | Tufted Titmouse | Baeolophus bicolor | Tits, Chickadees, and Titmice | 125 | Apr (past peak) |
| 35 | Eastern Bluebird | Sialia sialis | Thrushes | 121 | Apr (past peak) |
| 36 | Cooper's Hawk | Astur cooperii | Hawks, Eagles, and Kites | 120 | Jan (past peak) |
| 37 | Red-breasted Nuthatch | Sitta canadensis | Nuthatches | 117 | Sep (past peak) |
| 38 | American Crow | Corvus brachyrhynchos | Crows, Jays, and Magpies | 113 | Apr (past peak) |
| 39 | Red-winged Blackbird | Agelaius phoeniceus | New World Blackbirds and Orioles | 111 | Apr (past peak) |
| 40 | House Finch | Haemorhous mexicanus | Finches, Euphonias, and Allies | 109 | May (past peak) |
| 41 | Hairy Woodpecker | Leuconotopicus villosus | Woodpeckers | 108 | May (past peak) |
| 42 | Yellow-bellied Sapsucker | Sphyrapicus varius | Woodpeckers | 103 | Apr (past peak) |
| 43 | European Starling | Sturnus vulgaris | Starlings | 99 | Apr (past peak) |
| 44 | American Herring Gull | Larus smithsonianus | Gulls, Terns, and Skimmers | 98 | Jul (past peak) |
| 45 | Rusty Blackbird | Euphagus carolinus | New World Blackbirds and Orioles | 91 | Oct (peak) |
| 46 | American Pipit | Anthus rubescens | Wagtails and Pipits | 88 | Oct (peak) |
| 47 | Common Merganser | Mergus merganser | Ducks, Geese, and Swans | 85 | May (past peak) |
| 48 | Palm Warbler | Setophaga palmarum | New World Warblers | 83 | May (past peak) |
| 49 | Swamp Sparrow | Melospiza georgiana | New World Sparrows | 76 | May (past peak) |
| 50 | Eastern Phoebe | Sayornis phoebe | Tyrant Flycatchers | 76 | Apr (past peak) |