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
MerlinFalco columbariusWinter visitorUncommon24–33 cmRegularly Aug–Apr
SanderlingCalidris albaResidentUncommon18–20 cmRecorded all year
Blackpoll WarblerSetophaga striataPassage migrantUncommon13–15 cmRegularly May–Oct
Piping PloverCharadrius melodusSummer visitorUncommon17–18 cmRegularly Mar–Sep
Horned GrebePodiceps auritusWinter visitorUncommon31–38 cmRegularly Nov–Apr
Broad-winged HawkButeo platypterusSummer visitorUncommon34–44 cmRegularly Apr–Oct
Fox SparrowPasserella iliacaWinter visitorUncommon15–19 cmRegularly Oct–Apr
DunlinCalidris alpinaWinter visitorUncommon16–22 cmRegularly Sep–Jun
Great CormorantPhalacrocorax carboWinter visitorUncommon80–100 cmRegularly Sep–Mar
Short-billed DowitcherLimnodromus griseusSummer visitorUncommon23–32 cmRegularly May–Oct
Lincoln's SparrowMelospiza lincolniiPassage migrantUncommon13–15 cmRegularly May–Nov
Swainson's ThrushCatharus ustulatusPassage migrantUncommon16–20 cmRegularly May–Oct
Pied-billed GrebePodilymbus podicepsWinter visitorUncommon31–38 cmRegularly Aug–Apr
Peregrine FalconFalco peregrinusResidentUncommon34–58 cmRecorded all year
Snow BuntingPlectrophenax nivalisWinter visitorUncommon15–18 cmRegularly Nov–Mar
Solitary SandpiperTringa solitariaPassage migrantUncommon19–23 cmRegularly Apr–Oct
Black-crowned Night-heronNycticorax nycticoraxSummer visitorUncommon58–65 cmRecorded all year
Barred OwlStrix variaResidentUncommon43–50 cmRecorded all year
BobolinkDolichonyx oryzivorusSummer visitorUncommon16–20 cmRegularly May–Oct
Least FlycatcherEmpidonax minimusSummer visitorUncommon12–14 cmRegularly May–Sep
Sand MartinRiparia ripariaSummer visitorUncommon12–14 cmRegularly Apr–Sep
Great Horned OwlBubo virginianusWinter visitorUncommon46–63 cmRecorded all year
Glossy IbisPlegadis falcinellusSummer visitorUncommon48–66 cmRegularly Mar–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