Greater Scaup
Aythya marila
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderAnseriformes
- FamilyAnatidae (Anàtids)
- GenusAythya (Scaups, Pochards, and Allies)
- SpeciesAythya marila (Greater Scaup)
Closest Relatives at Shenandoah National Park
Ring-necked Duck
Aythya collaris
Lesser Scaup
Aythya affinis
Redhead
Aythya americana
Canvasback
Aythya valisineria
Canada Goose
Branta canadensis
Mallard
Anas platyrhynchos
Wood Duck
Aix sponsa
Ruddy Duck
Oxyura jamaicensis
Common Teal
Anas crecca
Northern Shoveler
Spatula clypeata
Common Merganser
Mergus merganser
Bufflehead
Bucephala albeola
📅 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 Greater Scaup in Shenandoah National Park?
About 1% of visitor-days record a Greater Scaup sighting in Shenandoah National Park, based on 106 observer-days of citizen-science data from GBIF.
When is the best time to see Greater Scaup in Shenandoah National Park?
December has the highest sighting rate for Greater Scaup in Shenandoah National Park in our monthly data.