60 birds were recorded seen in Minnesota in September in our iNaturalist sample; 4 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top birds in September

Wild Turkey

Mallard

Ruby-throated Hummingbird

Bald Eagle
Canada Goose

Great Blue Heron

Blue Jay

Ring-billed Gull

Wood Duck
Downy Woodpecker

Great Egret

American Goldfinch
All birds seen in Minnesota in September
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Wild Turkey | Meleagris gallopavo | Pheasants, Grouse, and Allies | 758 | Apr (past peak) |
| 2 | Mallard | Anas platyrhynchos | Ducks, Geese, and Swans | 621 | Apr (past peak) |
| 3 | Ruby-throated Hummingbird | Archilochus colubris | Hummingbirds | 587 | Sep (peak) |
| 4 | Bald Eagle | Haliaeetus leucocephalus | Hawks, Eagles, and Kites | 585 | Apr (past peak) |
| 5 | Canada Goose | Branta canadensis | Ducks, Geese, and Swans | 522 | Apr (past peak) |
| 6 | Great Blue Heron | Ardea herodias | Herons, Egrets, and Bitterns | 517 | Apr (past peak) |
| 7 | Blue Jay | Cyanocitta cristata | Crows, Jays, and Magpies | 487 | May (past peak) |
| 8 | Ring-billed Gull | Larus delawarensis | Gulls, Terns, and Skimmers | 455 | Sep (peak) |
| 9 | Wood Duck | Aix sponsa | Ducks, Geese, and Swans | 448 | Apr (past peak) |
| 10 | Downy Woodpecker | Dryobates pubescens | Woodpeckers | 433 | Apr (past peak) |
| 11 | Great Egret | Ardea alba | Herons, Egrets, and Bitterns | 420 | May (past peak) |
| 12 | American Goldfinch | Spinus tristis | Finches, Euphonias, and Allies | 418 | May (past peak) |
| 13 | Black-capped Chickadee | Poecile atricapillus | Tits, Chickadees, and Titmice | 375 | Apr (past peak) |
| 14 | Yellow-rumped Warbler | Setophaga coronata | New World Warblers | 367 | Apr (past peak) |
| 15 | Northern Flicker | Colaptes auratus | Woodpeckers | 364 | Apr (past peak) |
| 16 | Green Heron | Butorides virescens | Herons, Egrets, and Bitterns | 352 | Aug (past peak) |
| 17 | Trumpeter Swan | Cygnus buccinator | Ducks, Geese, and Swans | 326 | Apr (past peak) |
| 18 | White-throated Sparrow | Zonotrichia albicollis | New World Sparrows | 311 | Apr (past peak) |
| 19 | Broad-winged Hawk | Buteo platypterus | Hawks, Eagles, and Kites | 304 | May (past peak) |
| 20 | Nashville Warbler | Leiothlypis ruficapilla | New World Warblers | 299 | May (past peak) |
| 21 | Double-crested Cormorant | Nannopterum auritum | Cormorants and Shags | 295 | Apr (past peak) |
| 22 | Sandhill Crane | Antigone canadensis | Cranes | 289 | Apr (past peak) |
| 23 | Northern Cardinal | Cardinalis cardinalis | Cardinals and Allies | 258 | Apr (past peak) |
| 24 | Cedar Waxwing | Bombycilla cedrorum | Waxwings | 249 | Aug (past peak) |
| 25 | Eastern Phoebe | Sayornis phoebe | Tyrant Flycatchers | 249 | Apr (past peak) |
| 26 | American White Pelican | Pelecanus erythrorhynchos | Pelicans | 245 | Apr (past peak) |
| 27 | White-breasted Nuthatch | Sitta carolinensis | Nuthatches | 245 | Apr (past peak) |
| 28 | Red-tailed Hawk | Buteo jamaicensis | Hawks, Eagles, and Kites | 244 | Apr (past peak) |
| 29 | Turkey Vulture | Cathartes aura | New World Vultures | 241 | Apr (past peak) |
| 30 | Cooper's Hawk | Astur cooperii | Hawks, Eagles, and Kites | 228 | Apr (past peak) |
| 31 | Palm Warbler | Setophaga palmarum | New World Warblers | 225 | May (past peak) |
| 32 | Ruffed Grouse | Bonasa umbellus | Pheasants, Grouse, and Allies | 223 | Feb (past peak) |
| 33 | American Crow | Corvus brachyrhynchos | Crows, Jays, and Magpies | 210 | Apr (past peak) |
| 34 | Red-bellied Woodpecker | Melanerpes carolinus | Woodpeckers | 209 | Apr (past peak) |
| 35 | House Sparrow | Passer domesticus | Old World Sparrows | 208 | May (past peak) |
| 36 | Pileated Woodpecker | Dryocopus pileatus | Woodpeckers | 199 | Apr (past peak) |
| 37 | American Robin | Turdus migratorius | Thrushes | 191 | Apr (past peak) |
| 38 | Tennessee Warbler | Leiothlypis peregrina | New World Warblers | 167 | May (past peak) |
| 39 | Mourning Dove | Zenaida macroura | Pigeons and Doves | 165 | May (past peak) |
| 40 | Gray Catbird | Dumetella carolinensis | Mockingbirds and Thrashers | 161 | May (past peak) |
| 41 | House Finch | Haemorhous mexicanus | Finches, Euphonias, and Allies | 155 | Apr (past peak) |
| 42 | Common Yellowthroat | Geothlypis trichas | New World Warblers | 146 | May (past peak) |
| 43 | Eastern Bluebird | Sialia sialis | Thrushes | 145 | May (past peak) |
| 44 | Yellow-bellied Sapsucker | Sphyrapicus varius | Woodpeckers | 143 | Apr (past peak) |
| 45 | Hairy Woodpecker | Leuconotopicus villosus | Woodpeckers | 141 | Apr (past peak) |
| 46 | Franklin's Gull | Leucophaeus pipixcan | Gulls, Terns, and Skimmers | 139 | Sep (peak) |
| 47 | Belted Kingfisher | Megaceryle alcyon | Kingfishers | 138 | Apr (past peak) |
| 48 | Sharp-shinned Hawk | Accipiter striatus | Hawks, Eagles, and Kites | 138 | Sep (peak) |
| 49 | American Redstart | Setophaga ruticilla | New World Warblers | 138 | May (past peak) |
| 50 | Chipping Sparrow | Spizella passerina | New World Sparrows | 135 | May (past peak) |