Common Merganser
Mergus merganser
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderAnseriformes
- FamilyAnatidae (Anàtids)
- GenusMergus (Typical Mergansers)
- SpeciesMergus merganser (Common Merganser)
Closest Relatives at Białowieża National Park
Red-breasted Merganser
Mergus serrator
Mallard
Anas platyrhynchos
Mute Swan
Cygnus olor
Gadwall
Mareca strepera
Whooper Swan
Cygnus cygnus
Common Teal
Anas crecca
Eurasian Wigeon
Mareca penelope
Garganey
Spatula querquedula
Northern Shoveler
Spatula clypeata
Greater White-fronted Goose
Anser albifrons
Northern Pintail
Anas acuta
Tundra Bean Goose
Anser serrirostris
📅 Monthly Probability
☀️ When They're Spotted
Most active during daytime hours (6am–6pm) · across all parks (global)
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
Quick answers
What are the chances of seeing a Common Merganser in Białowieża National Park?
About 3% of visitor-days record a Common Merganser sighting in Białowieża National Park, based on 24 observer-days of citizen-science data from GBIF.
When is the best time to see Common Merganser in Białowieża National Park?
November has the highest sighting rate for Common Merganser in Białowieża National Park in our monthly data.