Birds to See in United States in May
270 bird species on our list for United States are recorded regularly in May
Of these, the most often recorded are American Robin, Northern Cardinal, Red-winged Blackbird, Mourning Dove and Blue Jay. New this month: Willow Flycatcher, Alder Flycatcher, Arctic Tern and Mourning Warbler and 16 more.
On the move in May
GBIF · MayArriving
At their peak
Gray CatbirdBusiest month of the year · All year
Northern Yellow WarblerBusiest month of the year · Apr–Oct
Baltimore OrioleBusiest month of the year · Apr–Sep
Great Crested FlycatcherBusiest month of the year · Mar–Sep
American RedstartBusiest month of the year · Apr–Oct
Rose-breasted GrosbeakBusiest month of the year · Apr–Oct
From United States’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 270 birds in May
270 birds
American RobinTurdus migratoriusResidentCommon20–28 cmRecorded all year · 2.69% in May
Northern CardinalCardinalis cardinalisResidentCommon21–23 cmRecorded all year · 2.25% in May
Red-winged BlackbirdAgelaius phoeniceusResidentCommon17–23 cmRecorded all year · 2.22% in May
Mourning DoveZenaida macrouraResidentCommon23–34 cmRecorded all year · 2.15% in May
Blue JayCyanocitta cristataResidentCommon25–30 cmRecorded all year · 1.80% in May
Song SparrowMelospiza melodiaResidentCommon12–17 cmRecorded all year · 1.74% in May
American CrowCorvus brachyrhynchosResidentCommon41–53 cmRecorded all year · 1.67% in May
Common GrackleQuiscalus quisculaSummer visitorCommon28–34 cmRecorded all year · 1.49% in May
Common StarlingSturnus vulgarisResidentCommon21–23 cmRecorded all year · 1.48% in May
Canada GooseBranta canadensisResidentCommon76–110 cmRecorded all year · 1.47% in May- Gray CatbirdDumetella carolinensisSummer visitorCommon20–24 cmRecorded all year · 1.45% in May
Red-bellied WoodpeckerMelanerpes carolinusResidentCommon23–26 cmRecorded all year · 1.37% in May
House FinchHaemorhous mexicanusResidentCommon13–15 cmRecorded all year · 1.33% in May- Northern Yellow WarblerSetophaga aestivaSummer visitorCommon12–13 cmRegularly Apr–Oct · 1.32% in May
MallardAnas platyrhynchosResidentCommon50–65 cmRecorded all year · 1.28% in May
Common YellowthroatGeothlypis trichasSummer visitorCommon11–13 cmRecorded all year · 1.21% in May
Turkey VultureCathartes auraResidentCommon62–81 cmRecorded all year · 1.20% in May
Downy WoodpeckerDryobates pubescensResidentCommon14–18 cmRecorded all year · 1.18% in May
Barn SwallowHirundo rusticaSummer visitorCommon17–19 cmRegularly Mar–Oct · 1.18% in May
Tufted TitmouseBaeolophus bicolorResidentCommon14–17 cmRecorded all year · 1.13% in May
House SparrowPasser domesticusResidentCommon14–17 cmRecorded all year · 1.13% in May
Chipping SparrowSpizella passerinaResidentCommon12–15 cmRecorded all year · 1.09% in May- Baltimore OrioleIcterus galbulaSummer visitorCommon17–19 cmRegularly Apr–Sep · 1.05% in May
Northern FlickerColaptes auratusResidentCommon28–31 cmRecorded all year · 0.91% in May
White-breasted NuthatchSitta carolinensisResidentCommon13–14 cmRecorded all year · 0.89% in May
Great Blue HeronArdea herodiasResidentCommon91–137 cmRecorded all year · 0.86% in May- Great Crested FlycatcherMyiarchus crinitusSummer visitorCommon17–22 cmRegularly Mar–Sep · 0.82% in May
Yellow-rumped WarblerSetophaga coronataResidentCommon12–15 cmRecorded all year · 0.81% in May
Northern MockingbirdMimus polyglottosResidentCommon21–26 cmRecorded all year · 0.78% in May- American RedstartSetophaga ruticillaSummer visitorCommon11–14 cmRegularly Apr–Oct · 0.72% in May
Eastern BluebirdSialia sialisResidentCommon16–21 cmRecorded all year · 0.66% in May
Red-tailed HawkButeo jamaicensisResidentCommon45–65 cmRecorded all year · 0.64% in May- Rose-breasted GrosbeakPheucticus ludovicianusSummer visitorCommon18–22 cmRegularly Apr–Oct · 0.61% in May
OvenbirdSeiurus aurocapillaSummer visitorCommon12–15 cmRegularly Apr–Oct · 0.57% in May
Cedar WaxwingBombycilla cedrorumResidentCommon15–18 cmRecorded all year · 0.49% in May
Ruby-throated HummingbirdArchilochus colubrisSummer visitorCommon7–9 cmRegularly Apr–Oct · 0.49% in May
Common RavenCorvus coraxResidentCommon54–67 cmRecorded all year · 0.49% in May
OspreyPandion haliaetusResidentCommon54–58 cmRecorded all year · 0.48% in May
Hairy WoodpeckerLeuconotopicus villosusResidentCommon18–26 cmRecorded all year · 0.48% in May
Great White EgretArdea albaResidentCommon80–104 cmRecorded all year · 0.45% in May
Wood DuckAix sponsaResidentCommon47–54 cmRecorded all year · 0.43% in May
Pileated WoodpeckerDryocopus pileatusResidentCommon40–49 cmRecorded all year · 0.42% in May
Bald EagleHaliaeetus leucocephalusResidentCommon70–102 cmRecorded all year · 0.42% in May
Scarlet TanagerPiranga olivaceaSummer visitorUncommon16–19 cmRegularly Apr–Oct · 0.40% in May
White-crowned SparrowZonotrichia leucophrysResidentCommon15–16 cmRecorded all year · 0.38% in May
Swainson's ThrushCatharus ustulatusSummer visitorUncommon16–20 cmRegularly Apr–Oct · 0.37% in May
Rock DoveColumba liviaResidentCommon29–37 cmRecorded all year · 0.37% in May
Black-throated Green WarblerSetophaga virensSummer visitorUncommon11–12 cmRegularly Apr–Oct · 0.34% in May
Chestnut-sided WarblerSetophaga pensylvanicaSummer visitorUncommon10–14 cmRegularly Apr–Oct · 0.34% in May
Ring-billed GullLarus delawarensisResidentCommon43–54 cmRecorded all year · 0.32% in May
Eurasian Collared DoveStreptopelia decaoctoResidentUncommon30–32 cmRecorded all year · 0.32% in May
Fish CrowCorvus ossifragusResidentCommon36–41 cmRecorded all year · 0.31% in May
Magnolia WarblerSetophaga magnoliaSummer visitorUncommon11–13 cmRegularly Apr–Oct · 0.30% in May
Ruby-crowned KingletCorthylio calendulaWinter visitorCommon9–11 cmRegularly Sep–Jul · 0.30% in May
Nashville WarblerLeiothlypis ruficapillaSummer visitorUncommon11–13 cmRegularly Apr–Nov · 0.29% in May
Purple MartinProgne subisSummer visitorUncommon18–20 cmRegularly Feb–Sep · 0.28% in May
Least FlycatcherEmpidonax minimusSummer visitorUncommon12–14 cmRegularly Apr–Sep · 0.27% in May
Wild TurkeyMeleagris gallopavoResidentUncommon100–125 cmRecorded all year · 0.26% in May
VeeryCatharus fuscescensSummer visitorUncommon16–19 cmRegularly Apr–Sep · 0.26% in May
American Herring GullLarus smithsonianusResidentCommon53–65 cmRecorded all year · 0.25% in May
Tennessee WarblerLeiothlypis peregrinaPassage migrantUncommon10–13 cmRegularly Apr–Nov · 0.25% in May
Swamp SparrowMelospiza georgianaResidentCommon12–15 cmRecorded all year · 0.24% in May
Palm WarblerSetophaga palmarumWinter visitorCommon12–14 cmRegularly Sep–May · 0.24% in May
Blackpoll WarblerSetophaga striataPassage migrantUncommon13–15 cmRegularly Apr–Oct · 0.24% in May
Black-throated Blue WarblerSetophaga caerulescensSummer visitorUncommon11–13 cmRegularly Apr–Oct · 0.24% in May
Western KingbirdTyrannus verticalisSummer visitorUncommon20–24 cmRegularly Mar–Sep · 0.23% in May
Blue-headed VireoVireo solitariusResidentUncommon12–15 cmRecorded all year · 0.22% in May
Northern WaterthrushParkesia noveboracensisSummer visitorUncommon12–15 cmRegularly Apr–Oct · 0.22% in May
Red-headed WoodpeckerMelanerpes erythrocephalusResidentUncommon19–23 cmRecorded all year · 0.21% in May
White-winged DoveZenaida asiaticaResidentUncommon27–30 cmRecorded all year · 0.20% in May
Sandhill CraneAntigone canadensisResidentUncommon80–122 cmRecorded all year · 0.19% in May
Western MeadowlarkSturnella neglectaResidentUncommon16–26 cmRecorded all year · 0.19% in May
Orange-crowned WarblerLeiothlypis celataResidentUncommon11–14 cmRecorded all year · 0.19% in May
Pine SiskinSpinus pinusResidentUncommon11–14 cmRecorded all year · 0.19% in May
GadwallMareca streperaResidentCommon46–56 cmRecorded all year · 0.17% in May
Least SandpiperCalidris minutillaWinter visitorCommon13–15 cmRegularly Jul–May · 0.16% in May
Marsh WrenCistothorus palustrisResidentUncommon10–14 cmRecorded all year · 0.16% in May
Hermit ThrushCatharus guttatusResidentUncommon14–18 cmRecorded all year · 0.16% in May
Solitary SandpiperTringa solitariaPassage migrantUncommon19–23 cmRegularly Apr–Oct · 0.14% in May
Willow FlycatcherEmpidonax trailliiSummer visitorUncommon13–17 cmRegularly May–Sep · 0.14% in May
Northern ShovelerSpatula clypeataWinter visitorCommon44–51 cmRecorded all year · 0.14% in May
Pied-billed GrebePodilymbus podicepsWinter visitorCommon31–38 cmRecorded all year · 0.14% in May
Lesser YellowlegsTringa flavipesSummer visitorUncommon23–27 cmRecorded all year · 0.13% in May
Greater YellowlegsTringa melanoleucaResidentUncommon29–40 cmRecorded all year · 0.13% in May
Prothonotary WarblerProtonotaria citreaSummer visitorUncommon13–14 cmRegularly Mar–Sep · 0.13% in May
BobolinkDolichonyx oryzivorusSummer visitorUncommon16–20 cmRegularly Apr–Oct · 0.13% in May
Bay-breasted WarblerSetophaga castaneaPassage migrantUncommon14–14 cmRegularly Apr–Oct · 0.13% in May
Yellow-bellied SapsuckerSphyrapicus variusResidentUncommon19–22 cmRecorded all year · 0.12% in May
Forster's TernSterna forsteriResidentUncommon33–36 cmRecorded all year · 0.12% in May
WilletTringa semipalmataResidentUncommon33–41 cmRecorded all year · 0.12% in May
Cape May WarblerSetophaga tigrinaPassage migrantUncommon12–14 cmRegularly Apr–Oct · 0.12% in May
Semipalmated PloverCharadrius semipalmatusSummer visitorUncommon17–19 cmRecorded all year · 0.12% in May
Lark SparrowChondestes grammacusResidentUncommon15–17 cmRecorded all year · 0.12% in May
Sand MartinRiparia ripariaSummer visitorUncommon12–14 cmRegularly Apr–Sep · 0.12% in May
Barred OwlStrix variaResidentUncommon43–50 cmRecorded all year · 0.11% in May
Common LoonGavia immerResidentUncommon66–91 cmRecorded all year · 0.11% in May
Acorn WoodpeckerMelanerpes formicivorusResidentUncommon20–24 cmRecorded all year · 0.11% in May
Lincoln's SparrowMelospiza lincolniiWinter visitorUncommon13–15 cmRecorded all year · 0.11% in May
Say's PhoebeSayornis sayaResidentUncommon17–20 cmRecorded all year · 0.11% in May
Black-crowned Night-heronNycticorax nycticoraxResidentUncommon58–65 cmRecorded all year · 0.10% in May
Mute SwanCygnus olorResidentUncommon140–160 cmRecorded all year · 0.10% in May
Broad-winged HawkButeo platypterusSummer visitorUncommon34–44 cmRegularly Mar–Nov · 0.10% in May
DunlinCalidris alpinaWinter visitorUncommon16–22 cmRegularly Sep–Jun · 0.10% in May
Ruddy DuckOxyura jamaicensisWinter visitorUncommon35–43 cmRecorded all year · 0.10% in May
Semipalmated SandpiperCalidris pusillaSummer visitorUncommon15–18 cmRegularly Apr–Oct · 0.10% in May
Common MerganserMergus merganserWinter visitorUncommon58–68 cmRecorded all year · 0.09% in May
Common PheasantPhasianus colchicusResidentUncommon50–90 cmRecorded all year · 0.09% in May
DickcisselSpiza americanaSummer visitorUncommon14–16 cmRegularly Apr–Oct · 0.09% in May
Horned LarkEremophila alpestrisResidentUncommon16–20 cmRecorded all year · 0.09% in May
Eurasian TealAnas creccaWinter visitorUncommon34–38 cmRecorded all year · 0.09% in May
Common TernSterna hirundoSummer visitorUncommon31–35 cmRegularly Apr–Oct · 0.08% in May
Trumpeter SwanCygnus buccinatorResidentUncommon139–157 cmRecorded all year · 0.08% in May
Great Black-backed GullLarus marinusResidentUncommon64–79 cmRecorded all year · 0.08% in May
Great Horned OwlBubo virginianusResidentUncommon46–63 cmRecorded all year · 0.08% in May
Cinnamon TealSpatula cyanopteraResidentUncommon36–43 cmRecorded all year · 0.08% in May
Painted BuntingPasserina cirisSummer visitorUncommon12–14 cmRegularly Dec–Oct · 0.08% in May
Grey PloverPluvialis squatarolaResidentUncommon27–30 cmRecorded all year · 0.07% in May
Clay-colored SparrowSpizella pallidaSummer visitorUncommon13–15 cmRecorded all year · 0.07% in May
Cattle EgretArdea ibisResidentUncommon46–56 cmRecorded all year · 0.07% in May
Scissor-tailed FlycatcherTyrannus forficatusSummer visitorUncommon28–38 cmRegularly Mar–Dec · 0.07% in May
Wilson's PhalaropePhalaropus tricolorSummer visitorUncommon22–24 cmRegularly Apr–Sep · 0.07% in May
Hooded MerganserLophodytes cucullatusWinter visitorCommon40–49 cmRecorded all year · 0.07% in May
American AvocetRecurvirostra americanaResidentUncommon43–51 cmRecorded all year · 0.06% in May
Nuttall's WoodpeckerDryobates nuttalliiResidentUncommon17–18 cmRecorded all year · 0.06% in May
Ruddy TurnstoneArenaria interpresResidentUncommon21–24 cmRecorded all year · 0.06% in May
Alder FlycatcherEmpidonax alnorumSummer visitorUncommon13–17 cmRegularly May–Sep · 0.06% in May
Ladder-backed WoodpeckerDryobates scalarisResidentUncommon16–19 cmRecorded all year · 0.06% in May
Virginia RailRallus limicolaResidentUncommon20–27 cmRecorded all year · 0.06% in May
SanderlingCalidris albaResidentUncommon18–20 cmRecorded all year · 0.06% in May
Vesper SparrowPooecetes gramineusResidentUncommon13–17 cmRecorded all year · 0.06% in May
Red-breasted MerganserMergus serratorWinter visitorUncommon52–58 cmRegularly Oct–Jun · 0.06% in May
Short-billed DowitcherLimnodromus griseusSummer visitorUncommon23–32 cmRecorded all year · 0.05% in May
Gray-cheeked ThrushCatharus minimusSummer visitorUncommon16–17 cmRegularly Apr–Oct · 0.05% in May
Evening GrosbeakHesperiphona vespertinaResidentUncommon16–22 cmRecorded all year · 0.05% in May
Glossy IbisPlegadis falcinellusResidentUncommon48–66 cmRecorded all year · 0.05% in May
Bonaparte's GullChroicocephalus philadelphiaWinter visitorUncommon28–38 cmRecorded all year · 0.05% in May
Northern PintailAnas acutaWinter visitorUncommon59–76 cmRecorded all year · 0.05% in May
Mourning WarblerGeothlypis philadelphiaSummer visitorRare10–15 cmRegularly May–Oct · 0.05% in May
Gila WoodpeckerMelanerpes uropygialisResidentUncommon20–25 cmRecorded all year · 0.05% in May
Black-necked GrebePodiceps nigricollisResidentUncommon28–34 cmRecorded all year · 0.04% in May
Peregrine FalconFalco peregrinusResidentUncommon34–58 cmRecorded all year · 0.04% in May
Black TernChlidonias nigerSummer visitorUncommon22–26 cmRegularly Apr–Sep · 0.04% in May
Black-billed CuckooCoccyzus erythropthalmusSummer visitorRare28–32 cmRegularly Apr–Oct · 0.04% in May
Ruffed GrouseBonasa umbellusResidentRare41–50 cmRecorded all year · 0.04% in May
WhimbrelNumenius phaeopusResidentUncommon40–46 cmRecorded all year · 0.04% in May
Philadelphia VireoVireo philadelphicusPassage migrantUncommon11–13 cmRegularly Apr–Oct · 0.04% in May
Long-billed DowitcherLimnodromus scolopaceusResidentUncommon27–30 cmRecorded all year · 0.04% in May
Sharp-shinned HawkAccipiter striatusWinter visitorUncommon24–34 cmRecorded all year · 0.04% in May
Red-necked PhalaropePhalaropus lobatusSummer visitorUncommon18–19 cmRegularly Apr–Oct · 0.04% in May
Pectoral SandpiperCalidris melanotosSummer visitorUncommon19–23 cmRegularly Mar–Nov · 0.04% in May
Franklin's GullLeucophaeus pipixcanSummer visitorUncommon32–36 cmRegularly Mar–Dec · 0.04% in May
American Black DuckAnas rubripesWinter visitorUncommon54–59 cmRecorded all year · 0.03% in May
Eastern Screech-owlMegascops asioResidentUncommon16–25 cmRecorded all year · 0.03% in May
Mountain BluebirdSialia currucoidesResidentUncommon15–18 cmRecorded all year · 0.03% in May
American BitternBotaurus lentiginosusResidentRare58–85 cmRecorded all year · 0.03% in May
MerlinFalco columbariusWinter visitorUncommon24–33 cmRecorded all year · 0.03% in May
White-rumped SandpiperCalidris fuscicollisSummer visitorRare15–18 cmRegularly Apr–Nov · 0.03% in May
Pacific WrenTroglodytes pacificusResidentUncommon8–12 cmRecorded all year · 0.03% in May
Brent GooseBranta berniclaWinter visitorUncommon55–66 cmRegularly Oct–Jun · 0.03% in May
Red CrossbillLoxia curvirostraResidentUncommon15–17 cmRecorded all year · 0.03% in May
Greater RoadrunnerGeococcyx californianusResidentUncommon52–54 cmRecorded all year · 0.03% in May
Surf ScoterMelanitta perspicillataWinter visitorUncommon48–60 cmRecorded all year · 0.03% in May
Western SandpiperCalidris mauriSummer visitorUncommon14–17 cmRecorded all year · 0.03% in May
EiderSomateria mollissimaResidentUncommon50–71 cmRecorded all year · 0.03% in May
Red-breasted SapsuckerSphyrapicus ruberResidentUncommon19–22 cmRecorded all year · 0.03% in May
Yellow-bellied FlycatcherEmpidonax flaviventrisSummer visitorRare13–15 cmRegularly May–Oct · 0.02% in May
Piping PloverCharadrius melodusSummer visitorUncommon17–18 cmRecorded all year · 0.02% in May
Greater ScaupAythya marilaWinter visitorUncommon39–56 cmRegularly Sep–Jun · 0.02% in May
Golden-fronted WoodpeckerMelanerpes aurifronsWinter visitorUncommon21–26 cmRecorded all year · 0.02% in May
Fox SparrowPasserella iliacaWinter visitorUncommon15–19 cmRecorded all year · 0.02% in May
Marbled GodwitLimosa fedoaResidentUncommon40–50 cmRecorded all year · 0.02% in May
Stilt SandpiperCalidris himantopusWinter visitorUncommon18–23 cmRegularly Jul–May · 0.02% in May
Red-necked GrebePodiceps grisegenaResidentUncommon40–50 cmRecorded all year · 0.02% in May
Golden EagleAquila chrysaetosResidentRare66–102 cmRecorded all year · 0.02% in May
Muscovy DuckCairina moschataResidentUncommon66–84 cmRecorded all year · 0.02% in May
Red KnotCalidris canutusResidentRare23–26 cmRecorded all year · 0.02% in May
Horned GrebePodiceps auritusWinter visitorUncommon31–38 cmRegularly Sep–May · 0.01% in May
Sooty ShearwaterArdenna griseaSummer visitorUncommon40–51 cmRegularly Apr–Nov · 0.01% in May
Arctic TernSterna paradisaeaSummer visitorRare33–39 cmRegularly May–Sep · 0.01% in May
Snow GooseAnser caerulescensWinter visitorUncommon69–84 cmRegularly Sep–Jun · 0.01% in May
Pacific LoonGavia pacificaResidentRare58–74 cmRecorded all year · 0.01% in May
Upland SandpiperBartramia longicaudaSummer visitorRare28–32 cmRegularly Mar–Sep · 0.01% in May
Varied ThrushIxoreus naeviusResidentUncommon20–26 cmRecorded all year · 0.01% in May
Lewis's WoodpeckerMelanerpes lewisResidentRare26–28 cmRecorded all year · 0.01% in May
Sandwich TernThalasseus sandvicensisResidentRare36–41 cmRecorded all year · 0.01% in May
Red-throated LoonGavia stellataWinter visitorUncommon53–69 cmRecorded all year · 0.01% in May
Long-tailed DuckClangula hyemalisWinter visitorUncommon37–60 cmRegularly Oct–Jun · 0.01% in May
Red-naped SapsuckerSphyrapicus nuchalisResidentRare19–21 cmRecorded all year · 0.01% in May
Baird's SandpiperCalidris bairdiiPassage migrantUncommon14–17 cmRegularly Apr–Oct · 0.01% in May
Gull-billed TernGelochelidon niloticaSummer visitorRare33–42 cmRecorded all year · 0.01% in May
Greater White-fronted GooseAnser albifronsWinter visitorUncommon64–81 cmRegularly Aug–Jun · 0.01% in May
Burrowing OwlAthene cuniculariaResidentRare19–25 cmRecorded all year · 0.01% in May
Scaly-breasted MuniaLonchura punctulataResidentUncommon11–12 cmRecorded all year · 0.01% in May
Northern GannetMorus bassanusWinter visitorUncommon87–100 cmRecorded all year · 0.01% in May
Hudsonian GodwitLimosa haemasticaSummer visitorRare36–42 cmRegularly Apr–Nov · 0.01% in May
Common RedpollAcanthis flammeaWinter visitorUncommon12–14 cmRegularly Oct–Aug · 0.01% in May
Eurasian Tree SparrowPasser montanusResidentRare13–14 cmRecorded all year · 0.01% in May
Egyptian GooseAlopochen aegyptiacaResidentRare63–73 cmRecorded all year · 0.01% in May
Lapland LongspurCalcarius lapponicusResidentRare15–16 cmRecorded all year · 0.01% in May
Cackling GooseBranta hutchinsiiWinter visitorUncommon53–76 cmRegularly Sep–Jun · 0.01% in May
Arizona WoodpeckerPicoides arizonaeResidentRare19–21 cmRecorded all year · 0.01% in May
White-headed WoodpeckerPicoides albolarvatusSummer visitorRare20–23 cmRecorded all year · 0.01% in May
Monk ParakeetMyiopsitta monachusResidentRare29–31 cmRecorded all year · 0.01% in May
Lesser Black-backed GullLarus fuscusWinter visitorUncommon52–64 cmRecorded all year · 0.01% in May
Black GuillemotCepphus grylleResidentRare30–32 cmRecorded all year · 0.01% in May
KittiwakeRissa tridactylaResidentRare37–41 cmRecorded all year · 0.01% in May
American Golden-PloverPluvialis dominicaPassage migrantRare24–28 cmRegularly Mar–Nov · 0.01% in May
Western Screech-owlMegascops kennicottiiResidentRare19–25 cmRecorded all year · 0.01% in May
Arctic JaegerStercorarius parasiticusSummer visitorRare41–46 cmRegularly May–Feb · 0.01% in May
Glaucous GullLarus hyperboreusResidentRare62–68 cmRecorded all year · 0.00% in May
Indian PeafowlPavo cristatusResidentRare86–230 cmRecorded all year · 0.00% in May
Gilded FlickerColaptes chrysoidesResidentRare28–31 cmRecorded all year · 0.00% in May
FulmarFulmarus glacialisResidentRare45–50 cmRecorded all year · 0.00% in May
ChukarAlectoris chukarResidentRare32–38 cmRecorded all year · 0.00% in May
Elf OwlMicrathene whitneyiSummer visitorRare13–15 cmRegularly Mar–Aug · 0.00% in May
Williamson's SapsuckerSphyrapicus thyroideusSummer visitorRare21–25 cmRecorded all year · 0.00% in May
Fulvous Whistling-DuckDendrocygna bicolorResidentRare45–53 cmRecorded all year · 0.00% in May
Purple SandpiperCalidris maritimaWinter visitorRare20–22 cmRegularly Nov–May · 0.00% in May
Northern Pygmy-owlGlaucidium gnomaResidentRare15–17 cmRecorded all year · 0.00% in May
Roseate TernSterna dougalliiSummer visitorRare33–41 cmRegularly May–Sep · 0.00% in May
Grey PhalaropePhalaropus fulicariusResidentRare20–22 cmRecorded all year · 0.00% in May
Sabine's GullXema sabiniSummer visitorRare27–33 cmRegularly Apr–Oct · 0.00% in May
Short-eared OwlAsio flammeusWinter visitorRare34–43 cmRegularly Oct–Jul · 0.00% in May
Red-cockaded WoodpeckerLeuconotopicus borealisResidentRare20–23 cmRecorded all year · 0.00% in May
Red JunglefowlGallus gallusResidentRare42–75 cmRecorded all year · 0.00% in May
Leach's Storm-petrelHydrobates leucorhousSummer visitorRare18–21 cmRegularly Apr–Oct · 0.00% in May
Pomarine JaegerStercorarius pomarinusSummer visitorRare46–51 cmRegularly Apr–Feb · 0.00% in May
Pacific Golden-PloverPluvialis fulvaWinter visitorRare23–26 cmRecorded all year · 0.00% in May
Long-tailed JaegerStercorarius longicaudusSummer visitorRare48–58 cmRegularly May–Oct · 0.00% in May
Eurasian WigeonMareca penelopeWinter visitorRare42–51 cmRegularly Sep–Jun · 0.00% in May
Northern Saw-whet OwlAegolius acadicusWinter visitorRare17–21 cmRecorded all year · 0.00% in May
Grey PartridgePerdix perdixResidentRare28–32 cmRecorded all year · 0.00% in May
Whiskered Screech-owlMegascops trichopsisSummer visitorRare18–23 cmRecorded all year · 0.00% in May
California GnatcatcherPolioptila californicaResidentRare10–11 cmRecorded all year · 0.00% in May
Black-backed WoodpeckerPicoides arcticusResidentRare21–24 cmRecorded all year · 0.00% in May
Flammulated OwlPsiloscops flammeolusSummer visitorRare15–17 cmRegularly Apr–Sep · 0.00% in May
Greylag GooseAnser anserResidentRare75–90 cmRecorded all year · 0.00% in May
Great CormorantPhalacrocorax carboWinter visitorRare80–100 cmRecorded all year · 0.00% in May
Bar-tailed GodwitLimosa lapponicaSummer visitorRare37–41 cmRegularly May–Jan · 0.00% in May
American Three-toed WoodpeckerPicoides dorsalisSummer visitorRare21–24 cmRecorded all year · 0.00% in May
Rock PtarmiganLagopus mutaSummer visitorRare34–36 cmRegularly May–Oct · 0.00% in May
Atlantic PuffinFratercula arcticaSummer visitorRare28–34 cmRegularly May–Mar · 0.00% in May
Buff-breasted SandpiperCalidris subruficollisPassage migrantRare18–20 cmRegularly Apr–Oct · 0.00% in May
King EiderSomateria spectabilisResidentRare46–64 cmRegularly May–Mar · 0.00% in May
California CondorGymnogyps californianusResidentRare109–140 cmRecorded all year · 0.00% in May
European GoldfinchCarduelis carduelisResidentRare12–13 cmRecorded all year · 0.00% in May
Vega GullLarus vegaeSummer visitorRare55–67 cmRegularly May–Dec · 0.00% in May
Little GullHydrocoloeus minutusResidentRare25–30 cmRecorded all year · 0.00% in May
Rose-ringed ParakeetPsittacula krameriResidentRare38–42 cmRecorded all year · 0.00% in May
RuffCalidris pugnaxSummer visitorRare20–32 cmRecorded all year · 0.00% in May
Swan GooseAnser cygnoidesWinter visitorRare81–94 cmRecorded all year · 0.00% in May
BramblingFringilla montifringillaWinter visitorRare14–16 cmRegularly Sep–Jun · 0.00% in May
Manx ShearwaterPuffinus puffinusSummer visitorRare30–38 cmRegularly Feb–Dec · 0.00% in May
Curlew SandpiperCalidris ferrugineaPassage migrantRare18–23 cmRegularly May–Dec · 0.00% in May
Pied WagtailMotacilla albaResidentRare17–19 cmRecorded all year · 0.00% in May
Chestnut MuniaLonchura atricapillaResidentRare10–11 cmRecorded all year · 0.00% in May
Eurasian SkylarkAlauda arvensisWinter visitorRare16–18 cmRecorded all year · 0.00% in May
BluethroatLuscinia svecicaSummer visitorRare13–14 cmRegularly May–Sep · 0.00% in May
Tufted DuckAythya fuligulaWinter visitorRare40–47 cmRegularly Oct–Jun · 0.00% in May
WheatearOenanthe oenantheSummer visitorRare15–16 cmRegularly May–Oct · 0.00% in May
Arctic LoonGavia arcticaSummer visitorRare58–77 cmRegularly May–Dec · 0.00% in May
Black-headed GullChroicocephalus ridibundusWinter visitorRare38–44 cmRecorded all year · 0.00% in May
GarganeySpatula querquedulaWinter visitorRare37–41 cmRegularly Sep–Jun · 0.00% in May
Black SwanCygnus atratusResidentRare110–142 cmRecorded all year · 0.00% in May
Mandarin DuckAix galericulataWinter visitorRare41–49 cmRecorded all year · 0.00% in May
Tundra Bean GooseAnser serrirostrisPassage migrantRare66–84 cmRegularly Nov–May · 0.00% in May
White-winged TernChlidonias leucopterusPassage migrantRare20–27 cmRegularly May · 0.00% in May
Ferruginous Pygmy-owlGlaucidium brasilianumWinter visitorRare15–19 cmRegularly Nov–Jun · 0.00% in May
BudgerigarMelopsittacus undulatusSummer visitorRare18–20 cmRecorded all year · 0.00% in May
Whooper SwanCygnus cygnusWinter visitorRare140–165 cmRegularly Aug–Jun · 0.00% in May
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