Aythya collaris
Silhouette: Andy Wilson · PhyloPic
In 3 days ~30% in a week ~50%
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 |
With luck
About 10% of wildlife watchers report a Ring-necked Duck sighting in San Luis Potosí on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 40th most-seen of the 62 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
February and November–December
In those months about 20% of wildlife watchers report a Ring-necked Duck in San Luis Potosí on a given day, against under 5% in March to October, the lowest months. Those are among San Luis Potosí's driest months, with about 10 mm of rain a month against 110 mm in July.
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.
9th of 43
Of the 43 cities where we can rate Ring-necked Duck sightings, San Luis Potosí ranks 9th at about 10%. The best odds are in Ciudad Juárez (México, about 60%), Mesa (United States, about 40%) and Las Vegas (United States, about 20%).
Same family: Anatidae
The closest relatives of the Ring-necked Duck that you can see in San Luis Potosí (family Anatidae, Ducks, Geese, and Swans) are Mexican Duck (about 20%), Blue-winged Teal (about 20%) and Green-winged Teal (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Ring-necked Duck is recorded against all the birds logged in San Luis Potosí (9 verified sightings), 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.
