Birds to See in Wyoming in September
136 bird species on our list for Wyoming are recorded regularly in September
Of these, the most often recorded are American Robin, Common Raven, Northern Flicker, Yellow-rumped Warbler and Canada Goose. New this month: Common Loon, American Herring Gull, Horned Grebe and Lesser Black-backed Gull and 6 more.
On the move in September
GBIF · SepArriving
At their peak
Yellow-rumped WarblerBusiest month of the year · Apr–Oct
Turkey VultureBusiest month of the year · Mar–Oct
Orange-crowned WarblerBusiest month of the year · Apr–Oct
Gray CatbirdBusiest month of the year · May–Oct
Baird's SandpiperBusiest month of the year · May
Clay-colored SparrowBusiest month of the year · May
From Wyoming’s bird records, 2019–2024: arriving birds are regular this month but not last; leaving birds are regular this month but not next.
Other months
All 136 birds in September
136 birds
American RobinTurdus migratoriusResidentCommon20–28 cmRecorded all year · 3.47% in Sep
Common RavenCorvus coraxResidentCommon54–67 cmRecorded all year · 3.35% in Sep
Northern FlickerColaptes auratusResidentCommon28–31 cmRecorded all year · 2.34% in Sep- Yellow-rumped WarblerSetophaga coronataSummer visitorCommon12–15 cmRegularly Apr–Oct · 2.32% in Sep
Canada GooseBranta canadensisResidentCommon76–110 cmRecorded all year · 2.16% in Sep
MallardAnas platyrhynchosResidentCommon50–65 cmRecorded all year · 2.12% in Sep
Red-tailed HawkButeo jamaicensisResidentCommon45–65 cmRecorded all year · 1.88% in Sep
White-crowned SparrowZonotrichia leucophrysSummer visitorCommon15–16 cmRegularly Apr–Jan · 1.83% in Sep
Common StarlingSturnus vulgarisResidentCommon21–23 cmRecorded all year · 1.70% in Sep
Eurasian Collared DoveStreptopelia decaoctoWinter visitorCommon30–32 cmRecorded all year · 1.62% in Sep- Turkey VultureCathartes auraSummer visitorCommon62–81 cmRegularly Mar–Oct · 1.52% in Sep
House FinchHaemorhous mexicanusWinter visitorCommon13–15 cmRecorded all year · 1.45% in Sep
House SparrowPasser domesticusWinter visitorCommon14–17 cmRecorded all year · 1.37% in Sep
American CrowCorvus brachyrhynchosWinter visitorCommon41–53 cmRecorded all year · 1.33% in Sep
Pine SiskinSpinus pinusResidentCommon11–14 cmRecorded all year · 1.29% in Sep
Mourning DoveZenaida macrouraSummer visitorCommon23–34 cmRegularly Apr–Nov · 1.28% in Sep
Chipping SparrowSpizella passerinaSummer visitorCommon12–15 cmRegularly Apr–Oct · 1.24% in Sep
Ruby-crowned KingletCorthylio calendulaSummer visitorCommon9–11 cmRegularly Apr–Oct · 1.19% in Sep
Red-winged BlackbirdAgelaius phoeniceusSummer visitorCommon17–23 cmRegularly Feb–Dec · 1.16% in Sep
Western MeadowlarkSturnella neglectaSummer visitorCommon16–26 cmRegularly Mar–Dec · 1.15% in Sep
Mountain BluebirdSialia currucoidesSummer visitorCommon15–18 cmRegularly Mar–Oct · 1.11% in Sep
Bald EagleHaliaeetus leucocephalusWinter visitorCommon70–102 cmRecorded all year · 1.10% in Sep
Song SparrowMelospiza melodiaResidentCommon12–17 cmRecorded all year · 1.03% in Sep
Barn SwallowHirundo rusticaSummer visitorCommon17–19 cmRegularly Apr–Sep · 0.99% in Sep
Common MerganserMergus merganserResidentCommon58–68 cmRecorded all year · 0.98% in Sep
Common GrackleQuiscalus quisculaSummer visitorCommon28–34 cmRegularly Apr–Oct · 0.97% in Sep
Cedar WaxwingBombycilla cedrorumResidentCommon15–18 cmRecorded all year · 0.87% in Sep
Great Blue HeronArdea herodiasSummer visitorCommon91–137 cmRecorded all year · 0.82% in Sep
Vesper SparrowPooecetes gramineusSummer visitorCommon13–17 cmRegularly Apr–Oct · 0.80% in Sep
OspreyPandion haliaetusSummer visitorCommon54–58 cmRegularly Apr–Oct · 0.76% in Sep- Orange-crowned WarblerLeiothlypis celataSummer visitorCommon11–14 cmRegularly Apr–Oct · 0.68% in Sep
Ring-billed GullLarus delawarensisSummer visitorCommon43–54 cmRegularly Mar–Dec · 0.68% in Sep
Sandhill CraneAntigone canadensisSummer visitorCommon80–122 cmRegularly Mar–Dec · 0.67% in Sep
Rock DoveColumba liviaWinter visitorCommon29–37 cmRecorded all year · 0.65% in Sep
GadwallMareca streperaSummer visitorCommon46–56 cmRecorded all year · 0.65% in Sep- Gray CatbirdDumetella carolinensisSummer visitorCommon20–24 cmRegularly May–Oct · 0.58% in Sep
Blue JayCyanocitta cristataWinter visitorCommon25–30 cmRecorded all year · 0.57% in Sep
Horned LarkEremophila alpestrisResidentCommon16–20 cmRecorded all year · 0.56% in Sep
Lincoln's SparrowMelospiza lincolniiSummer visitorCommon13–15 cmRegularly Apr–Oct · 0.55% in Sep
Trumpeter SwanCygnus buccinatorResidentCommon139–157 cmRecorded all year · 0.54% in Sep
Eurasian TealAnas creccaResidentCommon34–38 cmRecorded all year · 0.51% in Sep
Downy WoodpeckerDryobates pubescensWinter visitorCommon14–18 cmRecorded all year · 0.50% in Sep
Hairy WoodpeckerLeuconotopicus villosusResidentCommon18–26 cmRecorded all year · 0.48% in Sep
Golden EagleAquila chrysaetosWinter visitorCommon66–102 cmRecorded all year · 0.42% in Sep
Northern ShovelerSpatula clypeataSummer visitorCommon44–51 cmRecorded all year · 0.40% in Sep
Pied-billed GrebePodilymbus podicepsSummer visitorCommon31–38 cmRegularly Apr–Dec · 0.40% in Sep
White-breasted NuthatchSitta carolinensisWinter visitorCommon13–14 cmRecorded all year · 0.39% in Sep
Black-necked GrebePodiceps nigricollisSummer visitorCommon28–34 cmRegularly Apr–Nov · 0.38% in Sep
Northern Yellow WarblerSetophaga aestivaSummer visitorCommon12–13 cmRegularly May–Sep · 0.37% in Sep
Red-naped SapsuckerSphyrapicus nuchalisSummer visitorUncommon19–21 cmRegularly Apr–Oct · 0.37% in Sep
Red CrossbillLoxia curvirostraResidentCommon15–17 cmRecorded all year · 0.34% in Sep
Ruddy DuckOxyura jamaicensisSummer visitorCommon35–43 cmRegularly Mar–Nov · 0.34% in Sep
Common YellowthroatGeothlypis trichasSummer visitorCommon11–13 cmRegularly May–Oct · 0.32% in Sep
Sharp-shinned HawkAccipiter striatusWinter visitorUncommon24–34 cmRecorded all year · 0.31% in Sep
Greater YellowlegsTringa melanoleucaPassage migrantUncommon29–40 cmRegularly Mar–Nov · 0.29% in Sep- Baird's SandpiperCalidris bairdiiPassage migrantUncommon14–17 cmRegularly May–Oct · 0.28% in Sep
Great Horned OwlBubo virginianusResidentCommon46–63 cmRecorded all year · 0.25% in Sep
Say's PhoebeSayornis sayaSummer visitorUncommon17–20 cmRegularly Mar–Sep · 0.25% in Sep
Wild TurkeyMeleagris gallopavoWinter visitorCommon100–125 cmRecorded all year · 0.24% in Sep- Clay-colored SparrowSpizella pallidaPassage migrantUncommon13–15 cmRegularly May–Oct · 0.24% in Sep
Lark SparrowChondestes grammacusSummer visitorCommon15–17 cmRegularly May–Sep · 0.23% in Sep
Northern PintailAnas acutaWinter visitorCommon59–76 cmRecorded all year · 0.20% in Sep
Lesser YellowlegsTringa flavipesPassage migrantUncommon23–27 cmRegularly Mar–Oct · 0.20% in Sep
Western KingbirdTyrannus verticalisSummer visitorCommon20–24 cmRegularly May–Sep · 0.20% in Sep
American AvocetRecurvirostra americanaSummer visitorUncommon43–51 cmRegularly Apr–Nov · 0.19% in Sep
Marsh WrenCistothorus palustrisSummer visitorUncommon10–14 cmRegularly Mar–Dec · 0.16% in Sep
Ruffed GrouseBonasa umbellusResidentUncommon41–50 cmRecorded all year · 0.16% in Sep
Common LoonGavia immerPassage migrantCommon66–91 cmRegularly Sep–Apr · 0.16% in Sep
Least SandpiperCalidris minutillaPassage migrantUncommon13–15 cmRegularly Apr–Oct · 0.15% in Sep
Hermit ThrushCatharus guttatusSummer visitorUncommon14–18 cmRegularly Apr–Oct · 0.15% in Sep
Cinnamon TealSpatula cyanopteraSummer visitorCommon36–43 cmRegularly Mar–Sep · 0.14% in Sep
Solitary SandpiperTringa solitariaPassage migrantUncommon19–23 cmRegularly Apr–Sep · 0.14% in Sep
Franklin's GullLeucophaeus pipixcanSummer visitorUncommon32–36 cmRegularly Mar–Oct · 0.12% in Sep
Swainson's ThrushCatharus ustulatusSummer visitorCommon16–20 cmRegularly May–Sep · 0.12% in Sep
Wilson's PhalaropePhalaropus tricolorSummer visitorCommon22–24 cmRegularly Apr–Sep · 0.12% in Sep
Peregrine FalconFalco peregrinusSummer visitorUncommon34–58 cmRegularly Feb–Nov · 0.11% in Sep
MerlinFalco columbariusWinter visitorUncommon24–33 cmRegularly Aug–May · 0.11% in Sep
Common PheasantPhasianus colchicusResidentCommon50–90 cmRecorded all year · 0.11% in Sep
Pectoral SandpiperCalidris melanotosPassage migrantUncommon19–23 cmRegularly Jul–Oct · 0.10% in Sep
Long-billed DowitcherLimnodromus scolopaceusPassage migrantUncommon27–30 cmRegularly Apr–Nov · 0.10% in Sep
Evening GrosbeakHesperiphona vespertinaResidentUncommon16–22 cmRecorded all year · 0.10% in Sep
Red-headed WoodpeckerMelanerpes erythrocephalusSummer visitorUncommon19–23 cmRegularly May–Sep · 0.08% in Sep
Wood DuckAix sponsaResidentUncommon47–54 cmRecorded all year · 0.07% in Sep
Stilt SandpiperCalidris himantopusPassage migrantUncommon18–23 cmRegularly May–Oct · 0.07% in Sep
Semipalmated SandpiperCalidris pusillaPassage migrantUncommon15–18 cmRegularly Apr–Sep · 0.06% in Sep
Sand MartinRiparia ripariaSummer visitorUncommon12–14 cmRegularly Apr–Sep · 0.06% in Sep
Red-necked PhalaropePhalaropus lobatusPassage migrantUncommon18–19 cmRegularly Apr–Sep · 0.06% in Sep
American Three-toed WoodpeckerPicoides dorsalisResidentUncommon21–24 cmRegularly May–Mar · 0.06% in Sep
Broad-winged HawkButeo platypterusPassage migrantUncommon34–44 cmRegularly Apr–Oct · 0.06% in Sep
Sabine's GullXema sabiniPassage migrantUncommon27–33 cmRegularly Aug–Oct · 0.06% in Sep
Lewis's WoodpeckerMelanerpes lewisSummer visitorUncommon26–28 cmRegularly May–Sep · 0.05% in Sep
SanderlingCalidris albaPassage migrantRare18–20 cmRegularly Apr–Oct · 0.05% in Sep
Least FlycatcherEmpidonax minimusSummer visitorUncommon12–14 cmRegularly May–Sep · 0.05% in Sep
Williamson's SapsuckerSphyrapicus thyroideusSummer visitorUncommon21–25 cmRegularly Apr–Oct · 0.04% in Sep
Hooded MerganserLophodytes cucullatusWinter visitorCommon40–49 cmRegularly Aug–Apr · 0.04% in Sep
Horned GrebePodiceps auritusPassage migrantUncommon31–38 cmRegularly Sep–May · 0.04% in Sep
American RedstartSetophaga ruticillaSummer visitorUncommon11–14 cmRegularly May–Sep · 0.04% in Sep
Willow FlycatcherEmpidonax trailliiSummer visitorUncommon13–17 cmRegularly May–Sep · 0.04% in Sep
ChukarAlectoris chukarWinter visitorUncommon32–38 cmRecorded all year · 0.04% in Sep
Western SandpiperCalidris mauriPassage migrantUncommon14–17 cmRegularly Apr–Sep · 0.04% in Sep
Semipalmated PloverCharadrius semipalmatusPassage migrantRare17–19 cmRegularly Apr–Sep · 0.04% in Sep
Fox SparrowPasserella iliacaSummer visitorUncommon15–19 cmRegularly Apr–Dec · 0.04% in Sep
Northern WaterthrushParkesia noveboracensisSummer visitorUncommon12–15 cmRegularly May–Sep · 0.03% in Sep
Forster's TernSterna forsteriSummer visitorUncommon33–36 cmRegularly Apr–Sep · 0.03% in Sep
Black-crowned Night-heronNycticorax nycticoraxSummer visitorUncommon58–65 cmRegularly Apr–Oct · 0.03% in Sep
Northern Saw-whet OwlAegolius acadicusPassage migrantUncommon17–21 cmRegularly Feb–Nov · 0.03% in Sep
Grey PartridgePerdix perdixWinter visitorUncommon28–32 cmRegularly Jul–Apr · 0.03% in Sep
Nashville WarblerLeiothlypis ruficapillaPassage migrantRare11–13 cmRegularly May–Oct · 0.02% in Sep
Virginia RailRallus limicolaSummer visitorRare20–27 cmRegularly Mar–Sep · 0.02% in Sep
Black TernChlidonias nigerSummer visitorRare22–26 cmRegularly May–Sep · 0.02% in Sep
Eastern Screech-owlMegascops asioWinter visitorRare16–25 cmRecorded all year · 0.02% in Sep
American Herring GullLarus smithsonianusPassage migrantUncommon53–65 cmRegularly Sep–Apr · 0.02% in Sep
Marbled GodwitLimosa fedoaSummer visitorUncommon40–50 cmRegularly Apr–Sep · 0.02% in Sep
WilletTringa semipalmataSummer visitorUncommon33–41 cmRegularly Apr–Sep · 0.02% in Sep
Short-eared OwlAsio flammeusResidentRare34–43 cmRecorded all year · 0.02% in Sep
Burrowing OwlAthene cuniculariaSummer visitorUncommon19–25 cmRegularly Apr–Oct · 0.02% in Sep
Chestnut-sided WarblerSetophaga pensylvanicaPassage migrantRare10–14 cmRegularly May–Sep · 0.02% in Sep
Grey PloverPluvialis squatarolaResidentRare27–30 cmRegularly May–Oct · 0.01% in Sep
Northern Pygmy-owlGlaucidium gnomaResidentUncommon15–17 cmRecorded all year · 0.01% in Sep
Eastern BluebirdSialia sialisSummer visitorRare16–21 cmRegularly May–Jan · 0.01% in Sep
Common TernSterna hirundoPassage migrantRare31–35 cmRegularly May–Oct · 0.01% in Sep
American Golden-PloverPluvialis dominicaPassage migrantRare24–28 cmRegularly Sep · 0.01% in Sep
Lesser Black-backed GullLarus fuscusPassage migrantUncommon52–64 cmRegularly Sep–Apr · 0.01% in Sep
Northern MockingbirdMimus polyglottosSummer visitorRare21–26 cmRegularly May–Oct · 0.01% in Sep
OvenbirdSeiurus aurocapillaSummer visitorRare12–15 cmRegularly May–Sep · 0.01% in Sep
Black-backed WoodpeckerPicoides arcticusSummer visitorRare21–24 cmRegularly May–Jan · 0.01% in Sep
Magnolia WarblerSetophaga magnoliaPassage migrantRare11–13 cmRegularly May–Oct · 0.01% in Sep
American BitternBotaurus lentiginosusSummer visitorRare58–85 cmRegularly Apr–Sep · 0.01% in Sep
Black-throated Blue WarblerSetophaga caerulescensPassage migrantRare11–13 cmRegularly Sep–Oct · 0.00% in Sep
Red-necked GrebePodiceps grisegenaSummer visitorRare40–50 cmRegularly May–Nov · 0.00% in Sep
Great White EgretArdea albaSummer visitorRare80–104 cmRegularly Apr–Sep · 0.00% in Sep
Rose-breasted GrosbeakPheucticus ludovicianusSummer visitorUncommon18–22 cmRegularly May–Sep · 0.00% in Sep
Boreal OwlAegolius funereusResidentUncommon21–28 cmRegularly Feb–Dec · 0.00% in Sep
Tennessee WarblerLeiothlypis peregrinaPassage migrantRare10–13 cmRegularly May–Sep · 0.00% in Sep
VeeryCatharus fuscescensSummer visitorRare16–19 cmRegularly May–Sep · 0.00% in Sep
Blackpoll WarblerSetophaga striataPassage migrantRare13–15 cmRegularly May–Sep · 0.00% in Sep
Data: EOD – eBird Observation Dataset (Cornell Lab of Ornithology), accessed via GBIF.org, CC BY 4.0. Records from 2019–2024, aggregated and filtered by Birdfact. How these lists are made