Ducks, Geese & Swans in Montana
Our list for Montana has 25 ducks, geese & swans recorded regularly there: 5 residents, 3 summer visitors, 10 winter visitors, 6 passage migrants and 1 scarce visitor
Most likely in October
GBIF · Oct
Share of all bird records in Montana in October, 2019–2024. Each month links to that month’s page.
All 25, most common first
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
- Greylag Goose 75–90 cm
- Canada Goose 76–110 cm
- Tundra Swan 120–150 cm
- Trumpeter Swan 139–157 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