Ducks, Geese & Swans in Anglesey
Our list for Anglesey has 25 ducks, geese & swans recorded regularly there: 9 residents, 2 summer visitors, 10 winter visitors and 4 passage migrants
Most likely in October
GBIF · OctShare of all bird records in Anglesey in October, 2019–2024. Each month links to that month’s page.
All 25, most common first
MallardAnas platyrhynchosResidentCommon50–65 cmRecorded all year
Eurasian WigeonMareca penelopeWinter visitorCommon42–51 cmRegularly Sep–Apr
Eurasian TealAnas creccaWinter visitorCommon34–38 cmRegularly Aug–Apr
Greylag GooseAnser anserResidentCommon75–90 cmRecorded all year
Common ShelduckTadorna tadornaResidentCommon58–67 cmRecorded all year
Canada GooseBranta canadensisResidentCommon76–110 cmRecorded all year
Brent GooseBranta berniclaWinter visitorCommon55–66 cmRegularly Sep–Apr
Northern ShovelerSpatula clypeataWinter visitorCommon44–51 cmRegularly Aug–Jun
Mute SwanCygnus olorResidentCommon140–160 cmRecorded all year
Red-breasted MerganserMergus serratorResidentCommon52–58 cmRecorded all year
GoldeneyeBucephala clangulaWinter visitorCommon40–51 cmRegularly Nov–Apr
Northern PintailAnas acutaWinter visitorCommon59–76 cmRegularly Sep–Apr
GadwallMareca streperaResidentCommon46–56 cmRecorded all year
Tufted DuckAythya fuligulaResidentCommon40–47 cmRecorded all year
EiderSomateria mollissimaSummer visitorCommon50–71 cmRegularly Nov–Jul
PochardAythya ferinaWinter visitorUncommon42–49 cmRegularly Aug–Jun
Long-tailed DuckClangula hyemalisWinter visitorUncommon37–60 cmRegularly Oct–Feb
Common ScoterMelanitta nigraSummer visitorUncommon43–54 cmRegularly Jan–Nov
Whooper SwanCygnus cygnusWinter visitorUncommon140–165 cmRegularly Oct–Feb
Greater ScaupAythya marilaPassage migrantUncommon39–56 cmRegularly Nov–Mar
Common MerganserMergus merganserWinter visitorUncommon58–68 cmRegularly Aug–Jun
Pink-footed GooseAnser brachyrhynchusPassage migrantUncommon60–75 cmRegularly Feb–Mar
Barnacle GooseBranta leucopsisResidentUncommon58–70 cmRegularly Nov
Smallest to largest
Length, cm- Eurasian Teal 34–38 cm
- Garganey 37–41 cm
- Tufted Duck 40–47 cm
- Goldeneye 40–51 cm
- Pochard 42–49 cm
- Eurasian Wigeon 42–51 cm
- Northern Shoveler 44–51 cm
- Greater Scaup 39–56 cm
- Long-tailed Duck 37–60 cm
- Common Scoter 43–54 cm
- Gadwall 46–56 cm
- Red-breasted Merganser 52–58 cm
- Mallard 50–65 cm
- Brent Goose 55–66 cm
- Eider 50–71 cm
- Common Shelduck 58–67 cm
- Common Merganser 58–68 cm
- Barnacle Goose 58–70 cm
- Northern Pintail 59–76 cm
- Pink-footed Goose 60–75 cm
- Greater White-fronted Goose 64–81 cm
- Greylag Goose 75–90 cm
- Canada Goose 76–110 cm
- Mute Swan 140–160 cm
- Whooper Swan 140–165 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