Anas carolinensis
Silhouette: Sheatherius · PhyloPic
In 3 days ~60% in a week ~90%
The green-winged teal (Anas carolinensis) or American teal is a common and widespread duck that breeds in the northern areas of North America except on the Aleutian Islands. It was considered conspecific with the Eurasian teal (A. crecca) for some time, but the two have since been split into separate species. The American Ornithological Society continues to debate this determination; however, nearly all other authorities consider it distinct based on behavioral, morphological, and molecular evidence. The scientific name is from Latin Anas, "duck" and carolinensis, "of Carolina".
This dabbling duck is strongly migratory and winters far south of its breeding range. It is highly gregarious outside of the breeding season and will form large flocks. In flight, the fast, twisting flocks resemble waders.
The green-winged teal was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it with the other ducks, geese and swans in the genus Anas and coined the binomial name Anas carolinensis. Gmelin based his description on the "American teal" that had been described in 1785 by... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Anchorage | 🇺🇸 United States | |
| 2 | Mesa | 🇺🇸 United States | |
| 3 | León | 🇲🇽 México | |
| 4 | Ciudad Juárez | 🇲🇽 México | |
| 5 | Vancouver | 🇨🇦 Canada | |
| 6 | Denver | 🇺🇸 United States | |
| 7 | Portland | 🇺🇸 United States | |
| 8 | San Luis Potosí | 🇲🇽 México | |
| 9 | Seattle | 🇺🇸 United States | |
| 10 | San Francisco | 🇺🇸 United States |
Possible
About 30% of wildlife watchers report a Green-winged Teal sighting in León on a given day, based on 25 verified sightings from GBIF citizen-science data. It is the 45th most-seen of the 124 birds we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
April and December
In those months about 50% of wildlife watchers report a Green-winged Teal in León on a given day, against about 10% in May and July–September, the lowest months. Those are among León's driest months, with about 5 mm of rain a month against 170 mm in July. June has too few records to rate.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Green-winged Teal sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 38
Of the 38 cities where we can rate Green-winged Teal sightings, León ranks 3rd at about 30%. The best odds are in Anchorage (United States, about 40%) and Mesa (United States, about 40%).
Same genus: Anas
The closest relatives of the Green-winged Teal that you can see in León (genus Anas, Mallards, Pintails, and Allies) are Mexican Duck (about 30%), Mallard (about 20%) and Northern Pintail (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Green-winged Teal is recorded against all the birds logged in León (25 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.
