Common Merganser
Mergus merganser
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderAnseriformes
- FamilyAnatidae (Anàtids)
- GenusMergus (Typical Mergansers)
- SpeciesMergus merganser (Common Merganser)
Closest Relatives at Katmai National Park
Red-breasted Merganser
Mergus serrator
Mallard
Anas platyrhynchos
Common Teal
Anas crecca
Common Goldeneye
Bucephala clangula
Harlequin Duck
Histrionicus histrionicus
Barrow's Goldeneye
Bucephala islandica
American White-winged Scoter
Melanitta deglandi
Trumpeter Swan
Cygnus buccinator
Tundra Swan
Cygnus columbianus
Northern Pintail
Anas acuta
Surf Scoter
Melanitta perspicillata
Black Scoter
Melanitta americana
📅 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 Katmai National Park?
About 69% of visitor-days record a Common Merganser sighting in Katmai National Park, based on 115 observer-days of citizen-science data from GBIF.
When is the best time to see Common Merganser in Katmai National Park?
September has the highest sighting rate for Common Merganser in Katmai National Park in our monthly data.