Baikal Teal
Encyclopedia
The Baikal Teal also called the Bimaculate Duck or Squawk Duck, is a dabbling duck that breeds in eastern Russia
and winters in East Asia
.
. The breeding male is unmistakable, with a striking green nape
, yellow and black auriculars
, neck
, and throat. It has a dark crown
, and its breast is light brown with dark spots. It has long dropping dark scapulars, and its grey sides are set off on the front and rear with white bars..
The Baikal Teal has a height from 11.75 to 15.75 inches and a weighs an average of 1 pound.
The female looks similar to a female Green-winged Teal
but with a longer tail, and a distinctive white spot at the base of the bill and a white throat that angles to the back of the eye. She also has a distinct light eyebrow bordered by a darker crown. The underwing is similar to the Green-winged Teal also, but has a darker leading edge. The green speculum
has an indistinct cinnamon-buff inner border. Some "females" have "bridle" markings on their faces, but it has been suggested that at least some of these bridled "females," if not all, are in fact juvenile males. The juvenile has a plumage
similar to that of the female and can be distinguished from the Common Teal by the pale loral spot.
In non-breeding (eclipse) plumage, the drake looks more like the female, but plumage is a much richer reddish-brown (rufous
) colour.
and the Northern Shoveler
.
from the Yenisey basin eastwards to Kamchatka
, northern Koryak
, eastern Magadan Oblast
, northern Khabarovsk Krai
, southeastern and northern Sakha east central Irkutsk Oblast
, and northern Krasnoyarsk Krai
. It is a migratory
species, wintering in South Korea
, Japan
, Taiwan
, northern and eastern China
, from Beijing
down the coast to the Vietnam
border, and west to Yunnan
then north to Chongqing
and Henan
.
It breeds in pools on the tundra
edge and within swampy forests. In winter it is found on lowland fresh waters.
This species is classified as Vulnerable
on the IUCN Red List
due to hunting and destruction of its wintering wetland habitats. However, recent books state that the species is making a good comeback.
There are approximately 300,000 Baikal teal in the world.
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...
and winters in East Asia
East Asia
East Asia or Eastern Asia is a subregion of Asia that can be defined in either geographical or cultural terms...
.
Description
At between 39 and 43 cm (15.4 and 16.9 in), this duck is slightly larger and longer-tailed than the Common TealCommon Teal
The Eurasian Teal or Common Teal is a common and widespread duck which breeds in temperate Eurasia and migrates south in winter. The Eurasian Teal is often called simply the Teal due to being the only one of these small dabbling ducks in much of its range...
. The breeding male is unmistakable, with a striking green nape
Nape
The nape is the back of the neck. In technical anatomical/medical terminology, the nape is referred to by the word nucha, which also gives the adjective corresponding to "nape" in English, "nuchal"....
, yellow and black auriculars
Ear
The ear is the organ that detects sound. It not only receives sound, but also aids in balance and body position. The ear is part of the auditory system....
, neck
Neck
The neck is the part of the body, on many terrestrial or secondarily aquatic vertebrates, that distinguishes the head from the torso or trunk. The adjective signifying "of the neck" is cervical .-Boner anatomy: The cervical spine:The cervical portion of the human spine comprises seven boney...
, and throat. It has a dark crown
Crown (anatomy)
A crown is the top of the head.The following birds and other animals are said to have a crown on their head:* Cranes** Grey-crowned Crane** Red-crowned Crane** Black-crowned Crane* Crowned eagle* Gray-crowned Rosy Finch* Yellow-crowned Gonolek...
, and its breast is light brown with dark spots. It has long dropping dark scapulars, and its grey sides are set off on the front and rear with white bars..
The Baikal Teal has a height from 11.75 to 15.75 inches and a weighs an average of 1 pound.
The female looks similar to a female Green-winged Teal
Green-winged Teal
The Green-winged 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 Common Teal The Green-winged Teal (Anas carolinensis) is a common and widespread duck that breeds in the northern areas of...
but with a longer tail, and a distinctive white spot at the base of the bill and a white throat that angles to the back of the eye. She also has a distinct light eyebrow bordered by a darker crown. The underwing is similar to the Green-winged Teal also, but has a darker leading edge. The green speculum
Speculum
The term speculum, Latin for "mirror", and its plural specula, may refer to:* Speculum , a medical tool used for examining body cavities* Speculum , a journal of medieval studies published by the Medieval Academy of America...
has an indistinct cinnamon-buff inner border. Some "females" have "bridle" markings on their faces, but it has been suggested that at least some of these bridled "females," if not all, are in fact juvenile males. The juvenile has a plumage
Plumage
Plumage refers both to the layer of feathers that cover a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage vary between species and subspecies and can also vary between different age classes, sexes, and season. Within species there can also be a...
similar to that of the female and can be distinguished from the Common Teal by the pale loral spot.
In non-breeding (eclipse) plumage, the drake looks more like the female, but plumage is a much richer reddish-brown (rufous
Rufous
Rufous is a colour that may be described as reddish-brown or brownish-red, as of rust or oxidised iron.The first recorded use of rufous as a colour name in English was in the year 1782....
) colour.
Taxonomy
Molecular and behavioral data suggest that it has no close relatives among living ducks and should be placed in a distinct genus; it is possibly closest to such species as the GarganeyGarganey
The Garganey is a small dabbling duck. It breeds in much of Europe and western Asia, but is strictly migratory, with the entire population moving to southern Africa, India Santragachi and Australasia in winter, where large flocks can occur. This species was first described by Linnaeus in 1758...
and the Northern Shoveler
Northern Shoveler
The Northern Shoveler , Northern Shoveller in British English, sometimes known simply as the Shoveler, is a common and widespread duck. It breeds in northern areas of Europe and Asia and across most of North America, and is a rare vagrant to Australia...
.
Distribution and habitat
It breeds within the forest zone of eastern SiberiaSiberia
Siberia is an extensive region constituting almost all of Northern Asia. Comprising the central and eastern portion of the Russian Federation, it was part of the Soviet Union from its beginning, as its predecessor states, the Tsardom of Russia and the Russian Empire, conquered it during the 16th...
from the Yenisey basin eastwards to Kamchatka
Kamchatka Peninsula
The Kamchatka Peninsula is a peninsula in the Russian Far East, with an area of . It lies between the Pacific Ocean to the east and the Sea of Okhotsk to the west...
, northern Koryak
Koryak Autonomous Okrug
Koryak Okrug , or Koryakia, is an administrative division of Kamchatka Krai, Russia. It was a federal subject of Russia from 1931 until July 1, 2007, when it merged with Kamchatka Oblast. Prior to the merger, it was called Koryak Autonomous Okrug...
, eastern Magadan Oblast
Magadan Oblast
Magadan Oblast is a federal subject of Russia in the Far Eastern Federal District. Its administrative center is the city of Magadan....
, northern Khabarovsk Krai
Khabarovsk Krai
Khabarovsk Krai is a federal subject of Russia , located in the Russian Far East. It lies mostly in the basin of the lower Amur River, but also occupies a vast mountainous area along the coastline of the Sea of Okhotsk, an arm of the Pacific Ocean. The administrative center of the krai is the...
, southeastern and northern Sakha east central Irkutsk Oblast
Irkutsk Oblast
Irkutsk Oblast is a federal subject of Russia , located in southeastern Siberia in the basins of Angara River, Lena, and Nizhnyaya Tunguska Rivers. The administrative center is the city of Irkutsk. Population: -History:...
, and northern Krasnoyarsk Krai
Krasnoyarsk Krai
Krasnoyarsk Krai is a federal subject of Russia . It is the second largest federal subject after the Sakha Republic, and Russia's largest krai, occupying an area of , which is 13% of the country's total territory. The administrative center of the krai is the city of Krasnoyarsk...
. It is a migratory
Bird migration
Bird migration is the regular seasonal journey undertaken by many species of birds. Bird movements include those made in response to changes in food availability, habitat or weather. Sometimes, journeys are not termed "true migration" because they are irregular or in only one direction...
species, wintering in South Korea
South Korea
The Republic of Korea , , is a sovereign state in East Asia, located on the southern portion of the Korean Peninsula. It is neighbored by the People's Republic of China to the west, Japan to the east, North Korea to the north, and the East China Sea and Republic of China to the south...
, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...
, Taiwan
Taiwan
Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...
, northern and eastern China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...
, from Beijing
Beijing
Beijing , also known as Peking , is the capital of the People's Republic of China and one of the most populous cities in the world, with a population of 19,612,368 as of 2010. The city is the country's political, cultural, and educational center, and home to the headquarters for most of China's...
down the coast to the Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...
border, and west to Yunnan
Yunnan
Yunnan is a province of the People's Republic of China, located in the far southwest of the country spanning approximately and with a population of 45.7 million . The capital of the province is Kunming. The province borders Burma, Laos, and Vietnam.Yunnan is situated in a mountainous area, with...
then north to Chongqing
Chongqing
Chongqing is a major city in Southwest China and one of the five national central cities of China. Administratively, it is one of the PRC's four direct-controlled municipalities , and the only such municipality in inland China.The municipality was created on 14 March 1997, succeeding the...
and Henan
Henan
Henan , is a province of the People's Republic of China, located in the central part of the country. Its one-character abbreviation is "豫" , named after Yuzhou , a Han Dynasty state that included parts of Henan...
.
It breeds in pools on the tundra
Tundra
In physical geography, tundra is a biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian тундра from the Kildin Sami word tūndâr "uplands," "treeless mountain tract." There are three types of tundra: Arctic tundra, alpine...
edge and within swampy forests. In winter it is found on lowland fresh waters.
This species is classified as Vulnerable
Vulnerable species
On 30 January 2010, the IUCN Red List of Threatened Species identified 9694 Vulnerable species, subspecies and varieties, stocks and sub-populations.-References:...
on the IUCN Red List
IUCN Red List
The IUCN Red List of Threatened Species , founded in 1963, is the world's most comprehensive inventory of the global conservation status of biological species. The International Union for Conservation of Nature is the world's main authority on the conservation status of species...
due to hunting and destruction of its wintering wetland habitats. However, recent books state that the species is making a good comeback.
There are approximately 300,000 Baikal teal in the world.
External links
- BirdLife Species Factsheet.
- ARKive - images and movies of the Baikal teal (Anas formosa)
- Baikal Teal from the Internet Bird Collection