60 birds were recorded seen in New Jersey in September in our iNaturalist sample; 3 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top birds in September

Great Blue Heron

Laughing Gull
Common Yellowthroat

Great Egret

House Sparrow

Mourning Dove
Canada Goose

Double-crested Cormorant

Osprey

American Robin

Mallard

American Herring Gull
All birds seen in New Jersey in September
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Great Blue Heron | Ardea herodias | Herons, Egrets, and Bitterns | 751 | Sep (peak) |
| 2 | Laughing Gull | Leucophaeus atricilla | Gulls, Terns, and Skimmers | 711 | Aug (past peak) |
| 3 | Common Yellowthroat | Geothlypis trichas | New World Warblers | 700 | May (past peak) |
| 4 | Great Egret | Ardea alba | Herons, Egrets, and Bitterns | 676 | Aug (past peak) |
| 5 | House Sparrow | Passer domesticus | Old World Sparrows | 659 | May (past peak) |
| 6 | Mourning Dove | Zenaida macroura | Pigeons and Doves | 587 | Apr (past peak) |
| 7 | Canada Goose | Branta canadensis | Ducks, Geese, and Swans | 550 | Apr (past peak) |
| 8 | Double-crested Cormorant | Nannopterum auritum | Cormorants and Shags | 451 | Aug (past peak) |
| 9 | Osprey | Pandion haliaetus | Ospreys | 435 | Aug (past peak) |
| 10 | American Robin | Turdus migratorius | Thrushes | 429 | Apr (past peak) |
| 11 | Mallard | Anas platyrhynchos | Ducks, Geese, and Swans | 418 | Mar (past peak) |
| 12 | American Herring Gull | Larus smithsonianus | Gulls, Terns, and Skimmers | 404 | Aug (past peak) |
| 13 | Red-tailed Hawk | Buteo jamaicensis | Hawks, Eagles, and Kites | 344 | Mar (past peak) |
| 14 | Blue Jay | Cyanocitta cristata | Crows, Jays, and Magpies | 336 | May (past peak) |
| 15 | Gray Catbird | Dumetella carolinensis | Mockingbirds and Thrashers | 322 | May (past peak) |
| 16 | Great Black-backed Gull | Larus marinus | Gulls, Terns, and Skimmers | 312 | Aug (past peak) |
| 17 | Northern Mockingbird | Mimus polyglottos | Mockingbirds and Thrashers | 299 | Apr (past peak) |
| 18 | Northern Cardinal | Cardinalis cardinalis | Cardinals and Allies | 297 | Apr (past peak) |
| 19 | Turkey Vulture | Cathartes aura | New World Vultures | 296 | Mar (past peak) |
| 20 | American Redstart | Setophaga ruticilla | New World Warblers | 287 | May (past peak) |
| 21 | Wild Turkey | Meleagris gallopavo | Pheasants, Grouse, and Allies | 273 | Apr (past peak) |
| 22 | Snowy Egret | Egretta thula | Herons, Egrets, and Bitterns | 273 | Aug (past peak) |
| 23 | Black-and-white Warbler | Mniotilta varia | New World Warblers | 266 | May (past peak) |
| 24 | American Goldfinch | Spinus tristis | Finches, Euphonias, and Allies | 264 | Aug (past peak) |
| 25 | Sanderling | Calidris alba | Sandpipers and Allies | 261 | Aug (past peak) |
| 26 | Ruby-throated Hummingbird | Archilochus colubris | Hummingbirds | 253 | Aug (past peak) |
| 27 | Bald Eagle | Haliaeetus leucocephalus | Hawks, Eagles, and Kites | 252 | Oct (rising) |
| 28 | European Starling | Sturnus vulgaris | Starlings | 250 | May (past peak) |
| 29 | Mute Swan | Cygnus olor | Ducks, Geese, and Swans | 249 | Oct (rising) |
| 30 | Northern Parula | Setophaga americana | New World Warblers | 248 | Sep (peak) |
| 31 | Ovenbird | Seiurus aurocapilla | New World Warblers | 235 | May (past peak) |
| 32 | Forster's Tern | Sterna forsteri | Gulls, Terns, and Skimmers | 228 | May (past peak) |
| 33 | Semipalmated Plover | Charadrius semipalmatus | Plovers and Lapwings | 215 | Aug (past peak) |
| 34 | Cooper's Hawk | Astur cooperii | Hawks, Eagles, and Kites | 215 | Oct (rising) |
| 35 | Northern Flicker | Colaptes auratus | Woodpeckers | 209 | Apr (past peak) |
| 36 | American Oystercatcher | Haematopus palliatus | Oystercatchers | 200 | May (past peak) |
| 37 | Green Heron | Butorides virescens | Herons, Egrets, and Bitterns | 196 | Aug (past peak) |
| 38 | Ring-billed Gull | Larus delawarensis | Gulls, Terns, and Skimmers | 192 | Dec (rising) |
| 39 | Eastern Phoebe | Sayornis phoebe | Tyrant Flycatchers | 177 | Oct (rising) |
| 40 | Black Skimmer | Rynchops niger | Gulls, Terns, and Skimmers | 176 | Aug (past peak) |
| 41 | Red-eyed Vireo | Vireo olivaceus | Vireos, Shrike-Babblers, and Erpornis | 165 | May (past peak) |
| 42 | Red-bellied Woodpecker | Melanerpes carolinus | Woodpeckers | 162 | Apr (past peak) |
| 43 | Downy Woodpecker | Dryobates pubescens | Woodpeckers | 154 | Mar (past peak) |
| 44 | House Finch | Haemorhous mexicanus | Finches, Euphonias, and Allies | 152 | May (past peak) |
| 45 | Palm Warbler | Setophaga palmarum | New World Warblers | 150 | Oct (rising) |
| 46 | Greater Yellowlegs | Tringa melanoleuca | Sandpipers and Allies | 138 | Apr (past peak) |
| 47 | Ruddy Turnstone | Arenaria interpres | Sandpipers and Allies | 137 | May (past peak) |
| 48 | Belted Kingfisher | Megaceryle alcyon | Kingfishers | 136 | Oct (rising) |
| 49 | Magnolia Warbler | Setophaga magnolia | New World Warblers | 134 | May (past peak) |
| 50 | Royal Tern | Thalasseus maximus | Gulls, Terns, and Skimmers | 133 | Sep (peak) |