Greater Scaup
Aythya marila
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderAnseriformes
- FamilyAnatidae (Anàtids)
- GenusAythya (Scaups, Pochards, and Allies)
- SpeciesAythya marila (Greater Scaup)
The greater scaup (Aythya marila), just scaup in Europe or, colloquially, "bluebill" in North America, is a mid-sized diving duck, larger than the closely related lesser scaup and tufted duck. It spends the summer months breeding in Iceland, east across Scandinavia, northern Russia and Siberia, Alaska, and northern Canada. During the winter, it migrates south to the coasts of Europe, eastern Asia, and North America. Male greater scaup average slightly larger than the females but with much overlap; they have a light blue-grey bill and yellow eyes. Their heads are dark, with a green to purple (depending on light angle) gloss; the breast is black, the belly white, the upperparts pale grey, and the wing shows a strong white stripe. The females are mostly brown, again with white on the wing. Wikipedia →
<5% of wildlife watchers report a Greater Scaup sighting in Fertő-Hanság National Park, based on 5 days of visitor records from GBIF citizen-science data.
Closest Relatives at Fertő-Hanság National Park
Common Pochard
Aythya ferina
Ferruginous Duck
Aythya nyroca
Tufted Duck
Aythya fuligula
Mallard
Anas platyrhynchos
Common Shelduck
Tadorna tadorna
Mute Swan
Cygnus olor
Northern Shoveler
Spatula clypeata
Common Teal
Anas crecca
Red-crested Pochard
Netta rufina
Gadwall
Mareca strepera
Garganey
Spatula querquedula
Eurasian Wigeon
Mareca penelope
📅 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 Fertő-Hanság National Park?
About 0% of wildlife watchers report a Greater Scaup sighting in Fertő-Hanság National Park, based on 5 days of visitor records from GBIF citizen-science data.
When is the best time to see Greater Scaup in Fertő-Hanság National Park?
November has the highest sighting rate for Greater Scaup in Fertő-Hanság National Park in our monthly data.