Ruddy Duck
Oxyura jamaicensis
- KingdomAnimalia (Animals)
- PhylumChordata (Cordats)
- ClassAves (Aus)
- OrderAnseriformes
- FamilyAnatidae (Anàtids)
- GenusOxyura (Stiff-tailed Ducks)
- SpeciesOxyura jamaicensis (Ruddy Duck)
The ruddy duck (Oxyura jamaicensis) is a species of duck, one of six extant species of stiff-tailed duck (genus Oxyura). In the 1940s, the ruddy duck was introduced to the United Kingdom, where it established a population. Outside the Americas, the ruddy duck is considered a highly invasive species, prompting many countries to initiate culling projects to eradicate it from the native ecosystem. The generic name is derived from Ancient Greek oxus meaning "sharp", and oura meaning "tail". The specific name jamaicensis means "from Jamaica". The ruddy duck has also been nicknamed "butterball", a term used to describe an individual that is somewhat fat, due to its short and stout stature making activities like flying and walking upright awkward. Wikipedia →
Closest Relatives at Congaree National Park
Wood Duck
Aix sponsa
Mute Swan
Cygnus olor
Canada Goose
Branta canadensis
Ring-necked Duck
Aythya collaris
Hooded Merganser
Lophodytes cucullatus
Mallard
Anas platyrhynchos
Greater White-fronted Goose
Anser albifrons
Blue-winged Teal
Spatula discors
Bufflehead
Bucephala albeola
Lesser Scaup
Aythya affinis
Common Teal
Anas crecca
Northern Shoveler
Spatula clypeata
📅 Monthly Probability
Fewer than 5 records of Ruddy Duck at Congaree National Park — not enough to chart months honestly.
☀️ 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