Ducks, Geese & Swans in Connecticut
Our list for Connecticut has 29 ducks, geese & swans recorded regularly there: 4 residents, 1 summer visitor, 21 winter visitors, 2 passage migrants and 1 scarce visitor
Most likely in October
GBIF · OctShare of all bird records in Connecticut in October, 2019–2024. Each month links to that month’s page.
All 29, most common first
Canada GooseBranta canadensisResidentCommon76–110 cmRecorded all year
MallardAnas platyrhynchosResidentCommon50–65 cmRecorded all year
American Black DuckAnas rubripesWinter visitorCommon54–59 cmRecorded all year
Hooded MerganserLophodytes cucullatusWinter visitorCommon40–49 cmRegularly Oct–Apr
Red-breasted MerganserMergus serratorWinter visitorCommon52–58 cmRegularly Nov–Apr
GoldeneyeBucephala clangulaWinter visitorCommon40–51 cmRegularly Nov–Mar
Mute SwanCygnus olorResidentCommon140–160 cmRecorded all year
Wood DuckAix sponsaSummer visitorCommon47–54 cmRecorded all year
Brent GooseBranta berniclaWinter visitorCommon55–66 cmRecorded all year
Common MerganserMergus merganserWinter visitorCommon58–68 cmRecorded all year
Long-tailed DuckClangula hyemalisWinter visitorCommon37–60 cmRegularly Nov–Apr
GadwallMareca streperaWinter visitorCommon46–56 cmRegularly Oct–Apr
Eurasian TealAnas creccaWinter visitorUncommon34–38 cmRegularly Aug–Apr
Surf ScoterMelanitta perspicillataWinter visitorUncommon48–60 cmRegularly Oct–Apr
Greater ScaupAythya marilaWinter visitorUncommon39–56 cmRegularly Nov–Apr
EiderSomateria mollissimaWinter visitorUncommon50–71 cmRegularly Jun–Apr
Ruddy DuckOxyura jamaicensisWinter visitorUncommon35–43 cmRegularly Oct–Apr
Northern PintailAnas acutaWinter visitorUncommon59–76 cmRegularly Sep–Apr
Northern ShovelerSpatula clypeataWinter visitorUncommon44–51 cmRegularly Sep–Apr
Snow GooseAnser caerulescensWinter visitorUncommon69–84 cmRegularly Oct–Apr
Greater White-fronted GooseAnser albifronsWinter visitorUncommon64–81 cmRegularly Oct–Mar
Eurasian WigeonMareca penelopeWinter visitorUncommon42–51 cmRegularly Oct–Apr
Pink-footed GooseAnser brachyrhynchusPassage migrantRare60–75 cmRegularly Nov–Dec
Smallest to largest
Length, cm- Eurasian Teal 34–38 cm
- Ruddy Duck 35–43 cm
- Tufted Duck 40–47 cm
- Hooded Merganser 40–49 cm
- Goldeneye 40–51 cm
- Eurasian Wigeon 42–51 cm
- Greater Scaup 39–56 cm
- Northern Shoveler 44–51 cm
- Long-tailed Duck 37–60 cm
- Wood Duck 47–54 cm
- Gadwall 46–56 cm
- Surf Scoter 48–60 cm
- Red-breasted Merganser 52–58 cm
- King Eider 46–64 cm
- American Black Duck 54–59 cm
- Mallard 50–65 cm
- Brent Goose 55–66 cm
- Eider 50–71 cm
- Common Merganser 58–68 cm
- Cackling Goose 53–76 cm
- Northern Pintail 59–76 cm
- Pink-footed Goose 60–75 cm
- Greater White-fronted Goose 64–81 cm
- Muscovy Duck 66–84 cm
- Snow Goose 69–84 cm
- Greylag Goose 75–90 cm
- Canada Goose 76–110 cm
- Tundra Swan 120–150 cm
- Mute Swan 140–160 cm
Body length, bill to tail. Rare birds in grey.
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