Ducks, Geese & Swans in Guam
Our list for Guam has 5 ducks, geese & swans recorded regularly there: 3 winter visitors and 2 passage migrants
All 5, most common first
Northern PintailAnas acutaWinter visitorCommon59–76 cmRegularly Nov–Mar
Eurasian WigeonMareca penelopeWinter visitorCommon42–51 cmRegularly Nov–Mar
Tufted DuckAythya fuligulaWinter visitorCommon40–47 cmRegularly Nov–Feb
Northern ShovelerSpatula clypeataPassage migrantCommon44–51 cmRegularly Nov–Mar
GarganeySpatula querquedulaPassage migrantCommon37–41 cmRegularly Dec
Smallest to largest
Length, cm- Garganey 37–41 cm
- Tufted Duck 40–47 cm
- Eurasian Wigeon 42–51 cm
- Northern Shoveler 44–51 cm
- Northern Pintail 59–76 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