9-6-2023 MANDAI BIRD PARADISE, SINGAPORE - MANDARIN DUCK (MALE) (Aix galericulata)

The mandarin duck (Aix galericulata) is a perching duck species native to the East Palearctic. It is sexually dimorphic; males showing a dramatic difference from the females. It is medium-sized, at 41–49 cm (16–19 in) long with a 65–75 cm (26–30 in) wingspan. It is closely related to the North American wood duck, the only other member of the genus Aix. 'Aix' is an Ancient Greek word which was used by Aristotle to refer to an unknown diving bird, and 'galericulata' is the Latin for a wig, derived from galerum, a cap or bonnet. Outside of its native range, the mandarin duck has a large introduced population in the British Isles and Western Europe, with additional smaller introductions in North America.

The species was once widespread in East Asia, but large-scale exports and the destruction of its forest habitat have reduced populations in eastern Russia and in China to below 1,000 pairs in each country; Japan, however, is thought to still hold some 5,000 pairs. The Asian populations are migratory, overwintering in lowland eastern China and southern Japan.

Specimens frequently escape from collections, and in the 20th century, a large, feral population was established in Great Britain; more recently, small numbers have bred in Ireland, concentrated in the parks of Dublin. Now, about 7,000 are in Britain with other populations on the European continent, the largest of which is in the region of Berlin.

25-3-2018 TABLE MOUNTAIN AVIARY, CAPE TOWN - MANDARIN DUCK (MALE) (Aix galericulata)

1-4-2018 EDEN PLETTENBERG BAY, SOUTH AFRICA - MANDARIN DUCK (MALE) (Aix galericulata)

4-12-2015 JURONG, SINGAPORE - MANDARIN DUCK (MALE) (Aix galericulata)

The mandarin duck (Aix galericulata) is a perching duck species native to the East Palearctic. It is sexually dimorphic, males showing a dramatic difference from the females. It is medium-sized, at 41–49 cm (16–19 in) long with a 65–75 cm (26–30 in) wingspan. It is closely related to the North American wood duck, the only other member of the genus Aix. 'Aix' is an Ancient Greek word which was used by Aristotle to refer to an unknown diving bird, and 'galericulata' is the Latin for a wig, derived from galerum, a cap or bonnet. Outside of its native range, the mandarin duck has a large introduced population in the British Isles and Western Europe, with additional smaller introductions in North America.

The mandarin duck is among the more diminutive types of waterfowl, with a shorter height and smaller overall body size than the dabbling ducks, and is slightly smaller than its American wood duck relatives. The adult male has a petite, red bill, large white crescent above the eye and reddish face and "whiskers". The male's breast is purple with two vertical white bars, the flanks ruddy, and he has two orange feathers at the back (large feathers that stick up similar to boat sails). The female is similar to the female wood duck, with a grayish-lavender tone to her plumage, and a white eye-ring and stripe running back from the eye. The female is paler on the underside, has a small white flank stripe, and a pale tip to its bill.

Both the males and females have crests, but the purple crest is more pronounced on the male.

Like many other species of ducks, the male undergoes a moult after the mating season into eclipse plumage. When in eclipse plumage, the male looks similar to the female but can be distinguished by its bright yellow-orange or red beak, lack of any crest, and a less-pronounced eye-stripe.

Mandarin ducklings are almost identical in appearance to wood ducklings, and very similar to mallard ducklings. The ducklings can be distinguished from mallard ducklings because the eye-stripe of mandarin ducklings (and wood ducklings) stops at the eye, while in mallard ducklings it reaches all the way to the bill.

The species was once widespread in East Asia, but large-scale exports and the destruction of its forest habitat have reduced populations in eastern Russia and in China to below 1,000 pairs in each country; Japan, however, is thought to still hold some 5,000 pairs. The Asian populations are migratory, overwintering in lowland eastern China and southern Japan.

Specimens frequently escape from collections, and in the 20th century, a large, feral population was established in Great Britain; more recently, small numbers have bred in Ireland, concentrated in the parks of Dublin. Now, about 7,000 are in Britain with other populations on the European continent, the largest of which is in the region of Berlin. Isolated populations exist in the United States. The town of Black Mountain, North Carolina, has a limited population, and a free-flying feral population of several hundred mandarins exist in Sonoma County, California. This population is the result of several ducks escaping from captivity, then reproducing in the wild. In 2018, a single bird, dubbed Mandarin Patinkin, was seen in New York City's Central Park.

The habitats it prefers in its breeding range are the dense, shrubby forested edges of rivers and lakes. It mostly occurs in low-lying areas, but it may breed in valleys at altitudes of up to 1,500 m (4,900 ft). In winter, it additionally occurs in marshes, flooded fields, and open rivers. While it prefers fresh water, it may also be seen wintering in coastal lagoons and estuaries. In its introduced European range, it lives in more open habitat than in its native range, around the edges of lakes, water meadows, and cultivated areas with woods nearby.

27-10-2016 BEIJING, CHINA - MANDARIN DUCK (MALE) (Aix galericulata)

The mandarin, widely regarded as the world's most beautiful duck, is a native of China and Japan.

The drake mandarin's stunning plumage has long made it an artist's favourite, and it is widely depicted in oriental art.

The first mandarins were imported to Britain in the mid-18th century, but it wasn't until the 1930s that escapes from wildfowl collections started breeding here.

The first birds to escape did so from Alfred Ezra's collection at Foxwarren Park, near Cobham in Surrey, and this area remains one of the strongholds of mandarins in England.

Mandarins favour small wooded ponds and avoid lakes or large bodies of open water.

They are extremely manoeuvrable fliers, able to fly through trees with remarkable agility.

They frequently perch in trees, while the female invariably chooses a hole or cavity in a tree trunk in which to lay her eggs.

Lack of natural nest sites and competition from jackdaws and squirrels limits population expansion, but they will readily adopt suitable nest boxes.

After hatching, the ducklings jump to the ground: their fluffy down and lightweight ensures that injuries are unusual.

Once the mother has gathered her brood, she leads them straight to water.

It was long believed that the British population - now close to 8,000 birds - was of international importance, but previously undiscovered populations have been discovered in China, so this duck is far more numerous than was once thought.

In their native China mandarins have long been regarded as symbols of fidelity and pairs were given to brides on their wedding day.

In fact mandarins, like most ducks, only pair for the season, and new pairs will form again in the autumn.

The drake mandarin's display is highly ritualised, and includes raising the crest and the orange sails, and ritualised drinking and preening behind the sail.

The so-called sail is an elongated tertial feather.

In eclipse (summer) plumage the drake moults and looks almost identical to the duck, only his bright red beak indicating his sex.

China historically exported hundreds of thousands of mandarins, but the export trade was banned in 1975.

The mandarin is a member of the genus, which has only one other member, the closely related North American wood duck. Though the drakes are very different, the plumage of the females is very similar.

Despite the closeness of the relationship with the wood duck, no hybrids have ever been recorded. This is because the mandarin has a chromosome aberrance that makes it impossible for it to produce hybrids with other ducks.

The mandarin is one of the few introduced species in Britain that has not created any environmental problems, mainly because it uses a habitat not favoured by our native wildfowl.

Female mandarins don't quack, but they do make a series of clucking calls that are invariably uttered when they see danger, such as a hunting fox.

4-12-2015 JURONG, SINGAPORE - MANDARIN DUCK (MALE) (Aix galericulata)

The mandarin duck (Aix galericulata) is a perching duck species native to the East Palearctic. It is sexually dimorphic, males showing a dramatic difference from the females. It is medium-sized, at 41–49 cm (16–19 in) long with a 65–75 cm (26–30 in) wingspan. It is closely related to the North American wood duck, the only other member of the genus Aix. 'Aix' is an Ancient Greek word which was used by Aristotle to refer to an unknown diving bird, and 'galericulata' is the Latin for a wig, derived from galerum, a cap or bonnet. Outside of its native range, the mandarin duck has a large introduced population in the British Isles and Western Europe, with additional smaller introductions in North America.

The mandarin duck is among the more diminutive types of waterfowl, with a shorter height and smaller overall body size than the dabbling ducks, and is slightly smaller than its American wood duck relatives. The adult male has a petite, red bill, large white crescent above the eye and reddish face and "whiskers". The male's breast is purple with two vertical white bars, the flanks ruddy, and he has two orange feathers at the back (large feathers that stick up similar to boat sails). The female is similar to the female wood duck, with a grayish-lavender tone to her plumage, and a white eye-ring and stripe running back from the eye. The female is paler on the underside, has a small white flank stripe, and a pale tip to its bill.

Both the males and females have crests, but the purple crest is more pronounced on the male.

Like many other species of ducks, the male undergoes a moult after the mating season into eclipse plumage. When in eclipse plumage, the male looks similar to the female but can be distinguished by its bright yellow-orange or red beak, lack of any crest, and a less-pronounced eye-stripe.

Mandarin ducklings are almost identical in appearance to wood ducklings, and very similar to mallard ducklings. The ducklings can be distinguished from mallard ducklings because the eye-stripe of mandarin ducklings (and wood ducklings) stops at the eye, while in mallard ducklings it reaches all the way to the bill.

The species was once widespread in East Asia, but large-scale exports and the destruction of its forest habitat have reduced populations in eastern Russia and in China to below 1,000 pairs in each country; Japan, however, is thought to still hold some 5,000 pairs. The Asian populations are migratory, overwintering in lowland eastern China and southern Japan.

Specimens frequently escape from collections, and in the 20th century, a large, feral population was established in Great Britain; more recently, small numbers have bred in Ireland, concentrated in the parks of Dublin. Now, about 7,000 are in Britain with other populations on the European continent, the largest of which is in the region of Berlin. Isolated populations exist in the United States. The town of Black Mountain, North Carolina, has a limited population, and a free-flying feral population of several hundred mandarins exist in Sonoma County, California. This population is the result of several ducks escaping from captivity, then reproducing in the wild. In 2018, a single bird, dubbed Mandarin Patinkin, was seen in New York City's Central Park.

The habitats it prefers in its breeding range are the dense, shrubby forested edges of rivers and lakes. It mostly occurs in low-lying areas, but it may breed in valleys at altitudes of up to 1,500 m (4,900 ft). In winter, it additionally occurs in marshes, flooded fields, and open rivers. While it prefers fresh water, it may also be seen wintering in coastal lagoons and estuaries. In its introduced European range, it lives in more open habitat than in its native range, around the edges of lakes, water meadows, and cultivated areas with woods nearby.

27-10-2016 BEIJING, CHINA - MANDARIN DUCK (MALE) (Aix galericulata)

The Mandarin duck (Aix galericulata) is a perching duck species native to the East Palearctic. It is closely related to the North American Wood duck, the only other member of the genus Aix. 'Aix' is an Ancient Greek word that was used by Aristotle to refer to an unknown diving bird, and 'galericulata' is the Latin for a wig, derived from galerum, a cap, or bonnet. Mandarin ducks, called yuan-yang by the Chinese, are featured often in Oriental art and regarded as symbols of conjugal fidelity and affection.

Adult males are striking and unmistakable, with a red bill, a large white crescent above their eyes, and a reddish face with "whiskers". Their breasts are purple with double vertical white bars and their flanks are red and have two orange "sails" in the rear. During molting, the males resemble the females but their red bill is their point of difference. The females' bills are pinkish and they are much less colorful than males. They are pale beige with a thin white flank stripe and a white underbody and have a white eye-ring from where a stripe runs to the back of their heads.

Mandarin ducks breed in eastern Siberia, Japan, and China, and winter in Japan and southern China. In Britain, there is a small number of these birds in a free-flying population, stemming from the release of captive-bred ducks. Mandarin ducks prefer to breed in the dense, shrubby forested edges of rivers and lakes. In winter, they may occur in marshes, flooded fields, and open rivers. While these ducks prefer fresh water, they may also be seen wintering in coastal lagoons and estuaries. In their introduced European range, they live in a more open habitat than in their native range, around the edges of lakes, water meadows, and cultivated areas with woods nearby.

Mandarin ducks find food in as well as out of the water. They may feed by dabbling or walking on land. They forage among debris on banks, at the water’s edge, and while swimming, occasionally up-ending when seeking deeper submerged food. They feed mainly near dawn or dusk, perching in trees or on the ground during the day. Mandarin ducks are social birds outside the breeding season and will gather in flocks, sometimes of more than 60. They are agile flyers, using strong, rapid wing beats, and can rise steeply from the water’s surface or land into the air. The male makes a nasal whistling, a grunting sound, and a bark, while the female makes a soft call.

Mandarin ducks are monogamous and pair bonds may continue for many seasons. The courtship display of this species is very impressive, including mock drinking and shaking. It is the female who chooses the site for the nest but the male goes with her to find it. The nest is in a hole up to 30 feet off the ground in a tree. 9 to 12 white oval eggs are laid at daily intervals during April and May. Incubation is just by the female and is for 28 to 30 days. The eggs hatch within several hours of each other and when all the ducklings are hatched, their mother calls them from the ground and they crawl out of the hole and jump, to land unhurt on the ground and head to the nearest feeding ground. After 40-45 days when they can fly, they leave and join a new flock. Mandarin ducks become mature at one year of age.

Formerly abundant, Mandarin duck populations in their native countries in the Far East have declined as a result of habitat destruction (mainly logging), as well as overhunting.

According to the IUCN Red List, the total Mandarin duck population size is around 65,000-66,000 individuals. National population estimates include: in China: 100-10,000 breeding pairs and fewer than 50 wintering individuals; in Taiwan: fewer than 100 breeding pairs and fewer than 50 wintering individuals; in Korea: 100-10,000 breeding pairs, and in Japan: 10,000-100,000 breeding pairs plus 1,000-10,000 wintering individuals. According to the Royal Society for the Protection of Birds (RSPB) resource, the total breeding population in the UK is 2,300 pairs and the wintering population is 7,000 birds. Overall, currently, Mandarin ducks are classified as Least Concern (LC), but their numbers today are decreasing.