Green-Winged Teal
Kingdom
Phylum
Class
Order
Family
Genus
SPECIES
Anas carolinensis
Population size
6.7 Mlnlnn
Life Span
20 years
Top speed
70
43
km/hmph
km/h mph 
Weight
140-500
4.9-17.6
goz
g oz 
Length
31-39
12.2-15.4
cminch
cm inch 
Wingspan
52-59
20.5-23.2
cminch
cm inch 

The green-winged teal (Anas carolinensis ) 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 has since been split into its own 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".

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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.

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Di

Diurnal

He

Herbivore

Gr

Granivore

Fo

Folivore

Se

Semiaquatic

Wa

Waterfowl

Pr

Precocial

Te

Terrestrial

Se

Serial monogamy

Po

Polygyny

So

Social

Fl

Flocking

Mi

Migrating

G

starts with

Appearance

The Green-winged teal is the smallest North American dabbling duck. The breeding male has grey flanks and back, with a yellow rear end and a white-edged green speculum, obvious in flight or at rest. It has a chestnut head with a green eye patch. The female is light brown, with plumage much like a female mallard. In non-breeding (eclipse) plumage, the drake looks more like the female.

Distribution

Geography

Green-winged teal breed from the Aleutian Islands, northern Alaska, Mackenzie River delta, northern Saskatchewan, Manitoba, Ontario, Quebec, and Labrador south to central California, central Nebraska, central Kansas, southern Minnesota, Wisconsin, Ontario, Quebec, Newfoundland, and the Maritime Provinces. These birds are migratory and winter from southern Alaska and southern British Columbia east to New Brunswick and Nova Scotia and south to Central America. They also winter in Hawaii. Green-winged teal inhabit sheltered wetlands, such as taiga bogs, inland lakes, marshes, ponds, pools, and shallow streams with dense emergent and aquatic vegetation. These birds also inhabit arctic tundra and semidesert communities and avoid treeless or brushless habitats. They winter in both freshwater or brackish marshes, ponds, streams, and estuaries and nest in grasses, sedge meadows, or on dry hillsides having brush or aspen cover.

Green-Winged Teal habitat map
Green-Winged Teal habitat map
Green-Winged Teal
Attribution-ShareAlike License

Habits and Lifestyle

Green-winged teal are highly gregarious; outside of the breeding season, they form large flocks and are often found resting on mudbanks or stumps, or perching on low limbs of dead trees. They feed by day and prefer to seek food on mudflats. Where mudflats are lacking, the birds will occur in shallow marshes or temporarily flooded agricultural lands. Green-winged teal usually feed by dabbling on the water surface for plant food or grazing on the ground. They will occasionally dive to get their food and to avoid predators. Green-winged teal are among the earliest spring migrants. They arrive on nesting areas almost as soon as the snow melts. Green-winged teal are very noisy birds; the males communicate with clear whistles, whereas the females have a feeble 'quack'.

Seasonal behavior
Bird's call

Diet and Nutrition

Green-winged teal are herbivores (granivores, folivores). They usually eat vegetative matter consisting of seeds, stems, and leaves of aquatic and emergent vegetation. They will occasionally eat insects, mollusks, and crustaceans and during spring months, may gorge on maggots of decaying fish that are found around ponds.

Mating Habits

REPRODUCTION SEASON
varies with location
INCUBATION PERIOD
21-23 days
INDEPENDENT AGE
5-6 weeks
FEMALE NAME
duck
MALE NAME
drake
BABY NAME
duckling
web.animal_clutch_size
5-16 eggs

Green-winged teal are serially monogamous and form new pairs each breeding season; however, some males may exhibit polygynous behavior and mate with more than one female. In North Dakota, Green-winged teal generally begin nesting in late April. In the Northwest Territories, they begin nesting between late May and early July. At Minto Lakes, Alaska, their breeding season starts in early June and in late July. These ducks nest in depressions on dry ground located at the base of shrubs, under a log, or in dense grass. The nests are usually located 2 to 300 ft (0.61 to 91.44 m) from water. The female lays 5 to 16 eggs and incubates them alone for 21-23 days. The males leave females at the start of incubation and congregate on safe waters to molt. Females molt on breeding grounds. The ducklings hatch precocial (fully-developed) and leave the nest a few hours after hatching. They often fledge 34 to 35 days after birth or usually before 6 weeks of age and become reproductively mature in their first winter.

Population

Population threats

Although the Green-winged teal is widespread and common. However, it is highly vulnerable to hunting pressure being a very popular species taken by hunters each year in the U.S.

Population number

According to Partners in Flight, the North American breeding population of the Green-winged teal is 6,700,000 breeding birds.

Fun Facts for Kids

  • The scientific name of the Green-winged teal is from Latin 'Anas' and means 'duck' and 'carolinensis' is translated as 'of Carolina'.
  • In flight, the fast, twisting flocks of Green-winged teal resemble waders.
  • Green-winged teal always hide their nests very properly; they are usually concealed both from the side and from above in heavy grass, weeds, or brushy cover.
  • Ducks have up to 12,000 separate skin muscles that they use to control their feathers. The birds raise or compress their plumage in different ways in order to express emotions, regulate body heat, or when they dive under the water.
  • Cattails, bulrushes, smartweeds, and other emergent vegetation protect Green-winged teal on the water hiding them from predators or hunters.

References

1. Green-Winged Teal on Wikipedia - https://en.wikipedia.org/wiki/Green-winged_teal
2. Xeno-canto bird call - https://xeno-canto.org/357037

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