60 birds were recorded seen in Texas 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

Great-tailed Grackle

Northern Cardinal

Great Egret

Great Blue Heron

Ruby-throated Hummingbird

Northern Mockingbird

Mourning Dove
White-winged Dove
Snowy Egret

Green Heron

Turkey Vulture

Red-shouldered Hawk
All birds seen in Texas in September
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Great-tailed Grackle | Quiscalus mexicanus | New World Blackbirds and Orioles | 4,530 | Apr (past peak) |
| 2 | Northern Cardinal | Cardinalis cardinalis | Cardinals and Allies | 3,755 | Apr (past peak) |
| 3 | Great Egret | Ardea alba | Herons, Egrets, and Bitterns | 3,682 | Apr (past peak) |
| 4 | Great Blue Heron | Ardea herodias | Herons, Egrets, and Bitterns | 3,492 | Apr (past peak) |
| 5 | Ruby-throated Hummingbird | Archilochus colubris | Hummingbirds | 3,185 | Sep (peak) |
| 6 | Northern Mockingbird | Mimus polyglottos | Mockingbirds and Thrashers | 2,843 | Apr (past peak) |
| 7 | Mourning Dove | Zenaida macroura | Pigeons and Doves | 2,318 | Apr (past peak) |
| 8 | White-winged Dove | Zenaida asiatica | Pigeons and Doves | 2,186 | Apr (past peak) |
| 9 | Snowy Egret | Egretta thula | Herons, Egrets, and Bitterns | 2,176 | Apr (past peak) |
| 10 | Green Heron | Butorides virescens | Herons, Egrets, and Bitterns | 2,075 | May (past peak) |
| 11 | Turkey Vulture | Cathartes aura | New World Vultures | 2,039 | Apr (past peak) |
| 12 | Red-shouldered Hawk | Buteo lineatus | Hawks, Eagles, and Kites | 1,964 | Feb (past peak) |
| 13 | Northern Yellow Warbler | Setophaga aestiva | New World Warblers | 1,933 | Sep (peak) |
| 14 | Eastern Phoebe | Sayornis phoebe | Tyrant Flycatchers | 1,873 | Oct (rising) |
| 15 | Black Vulture | Coragyps atratus | New World Vultures | 1,805 | Apr (past peak) |
| 16 | Yellow-crowned Night Heron | Nyctanassa violacea | Herons, Egrets, and Bitterns | 1,768 | Apr (past peak) |
| 17 | Scissor-tailed Flycatcher | Tyrannus forficatus | Tyrant Flycatchers | 1,751 | Apr (past peak) |
| 18 | Little Blue Heron | Egretta caerulea | Herons, Egrets, and Bitterns | 1,622 | Apr (past peak) |
| 19 | Baltimore Oriole | Icterus galbula | New World Blackbirds and Orioles | 1,604 | Apr (past peak) |
| 20 | Blue Jay | Cyanocitta cristata | Crows, Jays, and Magpies | 1,603 | Apr (past peak) |
| 21 | Wilson's Warbler | Cardellina pusilla | New World Warblers | 1,581 | Sep (peak) |
| 22 | Carolina Chickadee | Poecile carolinensis | Tits, Chickadees, and Titmice | 1,560 | Jan (past peak) |
| 23 | House Finch | Haemorhous mexicanus | Finches, Euphonias, and Allies | 1,463 | Apr (past peak) |
| 24 | White Ibis | Eudocimus albus | Ibises and Spoonbills | 1,454 | Apr (past peak) |
| 25 | Mallard | Anas platyrhynchos | Ducks, Geese, and Swans | 1,452 | Apr (past peak) |
| 26 | Carolina Wren | Thryothorus ludovicianus | Wrens | 1,412 | Apr (past peak) |
| 27 | Blue-gray Gnatcatcher | Polioptila caerulea | Gnatcatchers and Gnatwrens | 1,304 | Sep (peak) |
| 28 | House Sparrow | Passer domesticus | Old World Sparrows | 1,218 | Apr (past peak) |
| 29 | Red-bellied Woodpecker | Melanerpes carolinus | Woodpeckers | 1,149 | Apr (past peak) |
| 30 | Red-tailed Hawk | Buteo jamaicensis | Hawks, Eagles, and Kites | 1,135 | Jan (past peak) |
| 31 | Cooper's Hawk | Astur cooperii | Hawks, Eagles, and Kites | 1,126 | Jan (past peak) |
| 32 | Killdeer | Charadrius vociferus | Plovers and Lapwings | 1,119 | Apr (past peak) |
| 33 | Black-bellied Whistling-Duck | Dendrocygna autumnalis | Ducks, Geese, and Swans | 1,114 | Apr (past peak) |
| 34 | Greater Roadrunner | Geococcyx californianus | Cuckoos | 1,112 | Apr (past peak) |
| 35 | Eastern Bluebird | Sialia sialis | Thrushes | 1,083 | Apr (past peak) |
| 36 | Laughing Gull | Leucophaeus atricilla | Gulls, Terns, and Skimmers | 1,082 | Apr (past peak) |
| 37 | Downy Woodpecker | Dryobates pubescens | Woodpeckers | 989 | Jan (past peak) |
| 38 | Lesser Goldfinch | Spinus psaltria | Finches, Euphonias, and Allies | 944 | Apr (past peak) |
| 39 | Summer Tanager | Piranga rubra | Cardinals and Allies | 934 | Apr (past peak) |
| 40 | Tricolored Heron | Egretta tricolor | Herons, Egrets, and Bitterns | 904 | Apr (past peak) |
| 41 | Osprey | Pandion haliaetus | Ospreys | 897 | Oct (rising) |
| 42 | Least Sandpiper | Calidris minutilla | Sandpipers and Allies | 838 | Apr (past peak) |
| 43 | White-eyed Vireo | Vireo griseus | Vireos, Shrike-Babblers, and Erpornis | 835 | Apr (past peak) |
| 44 | Nashville Warbler | Leiothlypis ruficapilla | New World Warblers | 826 | Apr (past peak) |
| 45 | Neotropic Cormorant | Nannopterum brasilianum | Cormorants and Shags | 818 | Apr (past peak) |
| 46 | American Crow | Corvus brachyrhynchos | Crows, Jays, and Magpies | 804 | Apr (past peak) |
| 47 | Loggerhead Shrike | Lanius ludovicianus | Shrikes | 798 | Jan (past peak) |
| 48 | Black-crested Titmouse | Baeolophus atricristatus | Tits, Chickadees, and Titmice | 768 | Apr (past peak) |
| 49 | Brown Pelican | Pelecanus occidentalis | Pelicans | 766 | Apr (past peak) |
| 50 | European Starling | Sturnus vulgaris | Starlings | 749 | Apr (past peak) |