Mallard

Anas platyrhynchos - Canard colvert

Systematics

Order
:
Anseriformes
Family
:
Anatidés
Genus
:
Anas
Species
:
platyrhynchos

Descriptor

Linnaeus, 1758

Biometrics

Size
: 65 cm
Wingspan
: 75 à 100 cm.
Weight
: 850 à 1400 g

Longevity

29 years

Geographic range

Distribution

Identification

The Mallard is the most common of the so-called surface ducks, meaning those ducks which do not have the ability to dive due to their morphology. It is also the largest of them. Sexual dimorphism is very pronounced. The male in breeding plumage is easily recognizable by its head and its neck of a bright green in bright light. That is what gave it its name. A white collar separates the green of the neck from the dark brown of the chest. The back is light brown, bordered by gray and brown scapulae. The underneath of the body is light gray. Against the black background of the rump and undertail coverts, the white sides of the tail are clearly visible. The central rectrices are black and curved into a staff. The wings are brown above and white below. In the top view, the wing shows a iridescent blue mirror framed by two white lines at the level of the secondaries, a very visible signal when flying. The dark eye does not stand out at all. The beak is lemon-yellow with a black nail. The legs are orange. The female is very different from the male. Its plumage is entirely dead leaves brown, with on each feather an alternation of light rusty-brown and dark brown zones. The bottom parts are just slightly lighter. The head is more uniform, with a dark brown cap and a dark line on the eye. The beak is two-tone, brown-gray with yellow-orange at the margin and at the tip. The white outer rectrices are also well visible. The wing has the same blue mirror as that of the male. The legs are orange. The male in eclipse looks somewhat like the female, but is larger, has a gray head with a very dark cap, but above all keeps the yellow beak. This late summer phase is short. The juvenile looks a lot like the female, but its plumage is overall darker and colder.Its beak is entirely greyish, with at most a hint of yellow.

Subspecific information 2 subspecies

Anas platyrhynchos platyrhynchos (Europe, Asia, North America)
Anas platyrhynchos conboschas (Greenland)

Foreign names

Canard colvert,
Ánade azulón,
pato-real,
Stockente,
tőkés réce,
Wilde Eend,
Germano reale,
gräsand,
Stokkand,
kačica divá,
kachna divoká,
Gråand,
sinisorsa,
Groenkopeend,
ànec collverd,
Stokkönd,
krzyżówka,
meža pīle,
mlakarica,
Кряква,
Itik kalung,
マガモ,
绿头鸭,
เป็ดหัวเขียว,
綠頭鴨,

Voice song and cries

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pause

The Mallard is not stingy with his voice. The female at take-off emits a loud ouink, often repeated. She is also the one who emits the well-known quack, made up of the same syllable but faster and decreasing ouink ouink ouink ouink ouink.... The male emits a high-pitched, impure, nasal cry heinh heinh heinh... at flight. On parade, it produces loud whistles. In addition to all this, the birds chatter among themselves and have a varied but unscripted vocabulary. Same within the families in spring.

Habitat

Mallards have low habitat requirements. They frequent all kinds of wetland habitats, both static and flowing, from small seasonal water points to larger bodies of water and from small streams to large rivers.

Freshwater is preferred for breeding purposes; however, they are not averse to salty waters. They appreciate shallow, vegetated and invertebrate-rich water bodies. Only deep and oligotropic waters, such as those found in some reservoirs, do not attract them. They are not particularly shy and can often be found in urban public and private recreational waters. At night, mallards may leave water bodies to explore the surrounding countryside, grasslands and crops, in search of food. During the intermediate seasons, large flocks may be found in large interior and coastal bodies of water (ponds, lakes, large reservoirs, lagoons, estuaries...) until the winter cold forces them to move elsewhere.

Behaviour character trait

The Mallard is a surface-dwelling "dabbling" duck that feeds in shallow water. It progresses slowly by rocking its body and dipping its head below the surface, while holding its tail vertically. It maintains this position by paddling its feet while its bill digs through the mud or vegetation. It regularly stands up to breathe. At dusk, Mallards leave the water to feed on the surrounding countryside. This is when hunters can be waiting to shoot them, of course on authorised dates. The courtship display sees the male exhibiting its shiny feathers. It swims around the female with its neck stretched out, followed by its head being thrown back onto its back while straightening its body, with a puffed up chest.

It propels a stream of water backwards from its legs while emitting a short whistle, then it nervously raises its tail two or three times. At the end, it bristles its head feathers, stretches its neck low to the water and swims around madly. It is spectacular when they mate in the water. The female is then completely submerged, with the male on its back, and only its head is above the surface. The female usually chooses to nest near where it was born, and some females come back to the same place each year. The female is an excellent mother. If she is surprised at the nest by an intruder, she will beat her wings and give off harsh cries while running across the ground, as though injured. This is usually enough to make the predator back away from the nest. It is easy to encourage Mallard nesting in even small bodies of water by installing nesting boxes attached to posts that protrude a little from the surface, containing a neutral substrate like shredded bark.

Flight

The Mallard, with its large size and weight, has a very energetic flight. It is able to take off from the surface of the water in a single leap, like other surface ducks.

It flies very quickly (its speed can reach up to 80 km/h) with its head and neck stretched out in front, thanks to its rapid and powerful beats. This high-speed flight causes a loud, staccato beating of the wings due to the strong pressure on the air, and is audible from a great distance. With this power of flight, the Mallard is able to complete migrations over long distances, during the day and at night.

Dietfeeding habits

The Mallard is eclectic when it comes to its diet- it is an omnivore. During breeding season, its diet consists mainly of animal food items (snails, slugs, worms, insects and their larvae, small fish, tadpoles...). Its beak is capable of filtering out small aquatic prey. In the interseason, its diet is more clearly vegetarian, consisting of various aquatic and non-aquatic plants and seeds.

Reproduction nesting

Before breeding, as mentioned above, Mallards tend to nest on the margins of marshes, ponds, and rivers, sheltered from a possible rise in water levels.

The nest is generally constructed directly on the ground and well-hidden in the dry grass, herbaceous clumps, and small shrubs of the area. It is a basic but deep cup made from dry grass. The female discovers an abdominal incubating plate and uses the fine feathers plucked from it to line the nest and make it soft. It is also possible for the nest to be placed in a cavity such as an old hollow tree or in an artificial nesting box. The female lays 8 to 10 pale green or almost white eggs, at one egg per day. The incubation period is about 30 days, carried out exclusively by the female and only starts when the laying is complete. The female blends in perfectly with her environment and can easily go unnoticed when resting on the nest. Once she leaves the nest to find food, she covers the eggs with her abdominal feathers to hide them and keep them warm. The chicks are fledglings and can leave the nest very quickly after hatching to follow their mother. Their downy feathers dry quickly and they can swim on their own once that has happened. They find their own food once they enter the water.

Geographic range

The Mallard is a holarctic species present in all of the northern hemisphere (North America, Greenland, Iceland and Eurasia up to the far east, such as Kamchatka and Japan). The northernmost populations (Alaska and Canada, Greenland, Iceland, north of Scandinavia and all of Siberia and Central Asia) are migratory and travel to the south of the nesting area and more to the south (south of the United States and Mexico, Mediterranean, Nile Valley, Mesopotamia and the large alluvial areas in Pakistan, north of India and south of China) in winter.

Threats - protection

IUCN conservation status

Extinct

Threatened

Least
concern

Extinc
in the Wild

Near
threatened

Not
evaluated

EX EW CR EN VU NT LC NE

The Mallard is not threatened. It is the most numerous species of duck everywhere. This is probably due to its great plasticity and adaptability. That being said, human activities such as hunting or the use of pesticides in agriculture, or early drying of habitats for example, can only have a negative effect on the population, currently partly offset by better winter survival due to climate change and adaptation to very heavily anthropized habitats.