Uncommon Birds in Connecticut
Our list for Connecticut has 83 uncommon birds recorded regularly there: 6 residents, 23 summer visitors, 33 winter visitors and 21 passage migrants
Most likely in October
GBIF · Oct
Share of all bird records in Connecticut in October, 2019–2024. Each month links to that month’s page.
All 83, most common first
Northern GannetMorus bassanusPassage migrantUncommon87–100 cmRegularly Oct–Apr
DickcisselSpiza americanaPassage migrantUncommon14–16 cmRegularly Aug–Jan
Common GullLarus canusPassage migrantUncommon40–46 cmRegularly Jan–Mar
Black-billed CuckooCoccyzus erythropthalmusSummer visitorUncommon28–32 cmRegularly May–Sep
Buff-breasted SandpiperCalidris subruficollisPassage migrantUncommon18–20 cmRegularly Aug–Sep
American BitternBotaurus lentiginosusWinter visitorUncommon58–85 cmRecorded all year
Monk ParakeetMyiopsitta monachusResidentUncommon29–31 cmRecorded all year
Bonaparte's GullChroicocephalus philadelphiaWinter visitorUncommon28–38 cmRecorded all year
Orange-crowned WarblerLeiothlypis celataWinter visitorUncommon11–14 cmRegularly Oct–Apr
Common RedpollAcanthis flammeaPassage migrantUncommon12–14 cmRegularly Nov–Feb
Eurasian WigeonMareca penelopeWinter visitorUncommon42–51 cmRegularly Oct–Apr
Clay-colored SparrowSpizella pallidaPassage migrantUncommon13–15 cmRegularly Jun–Dec
White-rumped SandpiperCalidris fuscicollisSummer visitorUncommon15–18 cmRegularly May–Nov
Glaucous GullLarus hyperboreusWinter visitorUncommon62–68 cmRegularly Dec–Apr
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