Aythya collaris
Silhouette: Andy Wilson · PhyloPic
In 3 days <5% in a week ~10%
The ring-necked duck (Aythya collaris) is a diving duck from North America commonly found in freshwater ponds and lakes. The scientific name is derived from Greek aithuia, an unidentified seabird mentioned by authors including Hesychius and Aristotle, and Latin collaris, "of the neck" from collum, "neck".
Ring-necked ducks are small to medium-sized diving ducks with the following length, weight, and wingspan measurements: Length: 15.3–18.1 in (39–46 cm) Weight: 17.3–32.1 oz (490–910 g) Wingspan: 24.4–24.8 in (62–63 cm) The adult male is similar in color pattern to the Eurasian tufted duck, its relative. Males are a little bit bigger than the female. It has two white rings surrounding its gray bill, a shiny black angular head, black back, white line on the wings, a white breast and yellow eyes. The adult female has a grayish brown angular head and body with a dark brown back, a dark bill with a more subtle light band than the male, grayish-blue feet and brown eyes with white rings surrounding them. Females also make a noise like trrr. The cinnamon neck ring is usually difficult to observe, which is why the bird is sometimes referred to as a "ringbill". Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Ciudad Juárez | 🇲🇽 México | |
| 2 | Mesa | 🇺🇸 United States | |
| 3 | Las Vegas | 🇺🇸 United States | |
| 4 | Seattle | 🇺🇸 United States | |
| 5 | Portland | 🇺🇸 United States | |
| 6 | Denver | 🇺🇸 United States | |
| 7 | Phoenix | 🇺🇸 United States | |
| 8 | Calgary | 🇨🇦 Canada | |
| 9 | San Luis Potosí | 🇲🇽 México | |
| 10 | Austin | 🇺🇸 United States |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | San Diego Zoo | 🇺🇸 United States | |
| 2 | National Zoological Park | 🇺🇸 United States | |
| 3 | Zoo Pilsen | 🇨🇿 Czechia | |
| 4 | Ecomuseum Zoo | 🇨🇦 Canada | |
| 5 | Slimbridge Wetland Centre | 🇬🇧 United Kingdom | |
| 6 | Woodland Park Zoo | 🇺🇸 United States | |
| 7 | Oregon Zoo | 🇺🇸 United States | |
| 8 | Cologne Zoological Garden | 🇩🇪 Germany | |
| 9 | Queens Zoo | 🇺🇸 United States | |
| 10 | L'Oceanogràfic | 🇪🇸 Spain | |
| 11 | Salisbury Zoo | 🇺🇸 United States | |
| 12 | Alameda Park Zoo | 🇺🇸 United States | |
| 13 | Tracy Aviary | 🇺🇸 United States | |
| 14 | Visitors Center and Aquarium | 🇺🇸 United States | |
| 15 | Cologne Zoo Aquarium | 🇩🇪 Germany |
Rare
Under 5% of wildlife watchers report a Ring-necked Duck sighting in Congaree National Park on a given day, based on 21 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 124th most-seen of the 148 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
December
In that month about 10% of wildlife watchers report a Ring-necked Duck in Congaree National Park on a given day, against under 5% in January to November, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Ring-necked Duck sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
37th of 48
Of the 48 parks where we can rate Ring-necked Duck sightings, Congaree National Park ranks 37th at under 5%. The best odds are in Elk Island National Park (Canada, about 30%), Riding Mountain National Park (Canada, about 30%) and Wrangell-St. Elias National Park (United States, about 20%).
GBIF citizen-science records
It is estimated from how often the Ring-necked Duck is recorded against all the birds logged in Congaree National Park (21 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
