Uncommon Birds in Delaware
Our list for Delaware has 81 uncommon birds recorded regularly there: 5 residents, 15 summer visitors, 29 winter visitors, 30 passage migrants and 2 scarce visitors
Most likely in October
GBIF · Oct
Share of all bird records in Delaware in October, 2019–2024. Each month links to that month’s page.
All 81, most common first
Tennessee WarblerLeiothlypis peregrinaPassage migrantUncommon10–13 cmRegularly May–Oct
Black-crowned Night-heronNycticorax nycticoraxResidentUncommon58–65 cmRecorded all year
Bay-breasted WarblerSetophaga castaneaPassage migrantUncommon14–14 cmRegularly May–Oct
KittiwakeRissa tridactylaPassage migrantUncommon37–41 cmRegularly Dec–Feb
White-rumped SandpiperCalidris fuscicollisSummer visitorUncommon15–18 cmRegularly May–Nov
Snow BuntingPlectrophenax nivalisWinter visitorUncommon15–18 cmRegularly Nov–Feb
Swainson's ThrushCatharus ustulatusPassage migrantUncommon16–20 cmRegularly May–Oct
Little AukAlle allePassage migrantUncommon18–21 cmRegularly Jan–Feb
White-crowned SparrowZonotrichia leucophrysWinter visitorUncommon15–16 cmRegularly Oct–May
Iceland GullLarus glaucoidesWinter visitorUncommon52–60 cmRegularly Dec–Feb
Barred OwlStrix variaResidentUncommon43–50 cmRecorded all year
Hudsonian GodwitLimosa haemasticaPassage migrantUncommon36–42 cmRegularly Aug–Nov
Virginia RailRallus limicolaResidentUncommon20–27 cmRecorded all year
Piping PloverCharadrius melodusSummer visitorUncommon17–18 cmRegularly Mar–Sep
Red-headed WoodpeckerMelanerpes erythrocephalusSummer visitorUncommon19–23 cmRecorded all year
Least FlycatcherEmpidonax minimusPassage migrantUncommon12–14 cmRegularly May–Sep
Lincoln's SparrowMelospiza lincolniiPassage migrantUncommon13–15 cmRegularly Sep–Nov
American BitternBotaurus lentiginosusWinter visitorUncommon58–85 cmRegularly Aug–May
Black TernChlidonias nigerSummer visitorUncommon22–26 cmRegularly May–Sep
American Golden-PloverPluvialis dominicaPassage migrantUncommon24–28 cmRegularly Apr–Nov
Cattle EgretArdea ibisSummer visitorUncommon46–56 cmRegularly Apr–Dec
Atlantic PuffinFratercula arcticaScarceUncommon28–34 cmRegularly Feb
Nashville WarblerLeiothlypis ruficapillaPassage migrantUncommon11–13 cmRegularly Apr–Oct
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