Ducks, Geese & Swans in Wyoming
Our list for Wyoming has 23 ducks, geese & swans recorded regularly there: 6 residents, 4 summer visitors, 4 winter visitors, 8 passage migrants and 1 scarce visitor
Most likely in October
GBIF · OctShare of all bird records in Wyoming in October, 2019–2024. Each month links to that month’s page.
All 23, most common first
Canada GooseBranta canadensisResidentCommon76–110 cmRecorded all year
MallardAnas platyrhynchosResidentCommon50–65 cmRecorded all year
GoldeneyeBucephala clangulaWinter visitorCommon40–51 cmRegularly Oct–Apr
GadwallMareca streperaSummer visitorCommon46–56 cmRecorded all year
Eurasian TealAnas creccaResidentCommon34–38 cmRecorded all year
Northern ShovelerSpatula clypeataSummer visitorCommon44–51 cmRecorded all year
Common MerganserMergus merganserResidentCommon58–68 cmRecorded all year
Cinnamon TealSpatula cyanopteraSummer visitorCommon36–43 cmRegularly Mar–Sep
Trumpeter SwanCygnus buccinatorResidentCommon139–157 cmRecorded all year
Ruddy DuckOxyura jamaicensisSummer visitorCommon35–43 cmRegularly Mar–Nov
Northern PintailAnas acutaWinter visitorCommon59–76 cmRecorded all year
Cackling GooseBranta hutchinsiiWinter visitorCommon53–76 cmRegularly Oct–Apr
Hooded MerganserLophodytes cucullatusWinter visitorCommon40–49 cmRegularly Aug–Apr
Snow GooseAnser caerulescensPassage migrantCommon69–84 cmRegularly Oct–Apr
Tundra SwanCygnus columbianusPassage migrantUncommon120–150 cmRegularly Oct–Mar
Red-breasted MerganserMergus serratorPassage migrantUncommon52–58 cmRegularly Oct–May
Wood DuckAix sponsaResidentUncommon47–54 cmRecorded all year
Long-tailed DuckClangula hyemalisPassage migrantUncommon37–60 cmRegularly Nov
Ross's GooseAnser rossiiPassage migrantUncommon57–64 cmRegularly Oct–Apr
Surf ScoterMelanitta perspicillataPassage migrantUncommon48–60 cmRegularly Oct–Nov
Greater ScaupAythya marilaPassage migrantUncommon39–56 cmRegularly Oct–Jun
Greater White-fronted GooseAnser albifronsPassage migrantUncommon64–81 cmRegularly Oct–Mar
Eurasian WigeonMareca penelopeScarceRare42–51 cm
Smallest to largest
Length, cm- Eurasian Teal 34–38 cm
- Ruddy Duck 35–43 cm
- Cinnamon Teal 36–43 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
- Mallard 50–65 cm
- Ross's Goose 57–64 cm
- Common Merganser 58–68 cm
- Cackling Goose 53–76 cm
- Northern Pintail 59–76 cm
- Greater White-fronted Goose 64–81 cm
- Snow Goose 69–84 cm
- Canada Goose 76–110 cm
- Tundra Swan 120–150 cm
- Trumpeter Swan 139–157 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