Common Merganser
Mergus merganser
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderAnseriformes
- FamilyAnatidae (Anàtids)
- GenusMergus (Typical Mergansers)
- SpeciesMergus merganser (Common Merganser)
Closest Relatives at Redwood National Park
Red-breasted Merganser
Mergus serrator
Surf Scoter
Melanitta perspicillata
Bufflehead
Bucephala albeola
Mallard
Anas platyrhynchos
American White-winged Scoter
Melanitta deglandi
Canada Goose
Branta canadensis
Greater Scaup
Aythya marila
Ruddy Duck
Oxyura jamaicensis
Lesser Scaup
Aythya affinis
Ring-necked Duck
Aythya collaris
Cackling Goose
Branta hutchinsii
American Wigeon
Mareca 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 Redwood National Park?
About 14% of visitor-days record a Common Merganser sighting in Redwood National Park, based on 313 observer-days of citizen-science data from GBIF.
When is the best time to see Common Merganser in Redwood National Park?
March has the highest sighting rate for Common Merganser in Redwood National Park in our monthly data.