Ducks, Geese & Swans in Delaware
Our list for Delaware has 27 ducks, geese & swans recorded regularly there: 3 residents, 1 summer visitor, 20 winter visitors, 2 passage migrants and 1 scarce visitor
Most likely in October
GBIF · OctShare of all bird records in Delaware in October, 2019–2024. Each month links to that month’s page.
All 27, most common first
Canada GooseBranta canadensisResidentCommon76–110 cmRecorded all year
MallardAnas platyrhynchosResidentCommon50–65 cmRecorded all year
Snow GooseAnser caerulescensWinter visitorCommon69–84 cmRegularly Nov–Apr
American Black DuckAnas rubripesWinter visitorCommon54–59 cmRecorded all year
Eurasian TealAnas creccaWinter visitorCommon34–38 cmRegularly Jul–May
Surf ScoterMelanitta perspicillataWinter visitorCommon48–60 cmRegularly Oct–Apr
Hooded MerganserLophodytes cucullatusWinter visitorCommon40–49 cmRegularly Nov–Mar
Northern PintailAnas acutaWinter visitorCommon59–76 cmRegularly Sep–Apr
Tundra SwanCygnus columbianusWinter visitorCommon120–150 cmRegularly Nov–Mar
Northern ShovelerSpatula clypeataWinter visitorCommon44–51 cmRegularly Aug–Apr
Red-breasted MerganserMergus serratorWinter visitorCommon52–58 cmRegularly Nov–Apr
Long-tailed DuckClangula hyemalisWinter visitorCommon37–60 cmRegularly Nov–Mar
Common MerganserMergus merganserWinter visitorCommon58–68 cmRegularly Dec–Apr
Mute SwanCygnus olorResidentCommon140–160 cmRecorded all year
Ruddy DuckOxyura jamaicensisWinter visitorCommon35–43 cmRegularly Sep–Jul
GadwallMareca streperaWinter visitorCommon46–56 cmRegularly Aug–Apr
Wood DuckAix sponsaSummer visitorCommon47–54 cmRecorded all year
Brent GooseBranta berniclaWinter visitorUncommon55–66 cmRegularly Oct–May
EiderSomateria mollissimaWinter visitorUncommon50–71 cmRegularly Nov–Mar
GoldeneyeBucephala clangulaWinter visitorUncommon40–51 cmRegularly Nov–Mar
Greater ScaupAythya marilaWinter visitorUncommon39–56 cmRegularly Oct–Mar
Ross's GooseAnser rossiiWinter visitorUncommon57–64 cmRegularly Nov–Mar
Cackling GooseBranta hutchinsiiWinter visitorUncommon53–76 cmRegularly Oct–Mar
Smallest to largest
Length, cm- Eurasian Teal 34–38 cm
- Ruddy Duck 35–43 cm
- Hooded Merganser 40–49 cm
- Goldeneye 40–51 cm
- Eurasian Wigeon 42–51 cm
- Northern Shoveler 44–51 cm
- Greater Scaup 39–56 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
- American Black Duck 54–59 cm
- Mallard 50–65 cm
- Brent Goose 55–66 cm
- Eider 50–71 cm
- Ross's Goose 57–64 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
- 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