Pacific Black Duck

anas superciliosa

The Pacific Black Duck is one of the most common and versatile waterfowl species native to the wetlands, rivers, and lagoons of Australia, New Zealand, and the Pacific islands. Known for its highly adaptable nature, this medium-sized dabbling duck easily transitions between remote natural waterways and bustling urban parks. Despite its common name, its plumage is predominantly a rich, dark brown with intricately patterned feathers rather than true black. This species plays an essential ecological role in its wetland habitats by dispersing the seeds of aquatic plants and controlling insect populations. They are highly social, often forming small flocks, and can be easily identified by their loud, classic duck-like quacks and their striking iridescent green wing patches visible in flight.

生息地: Typically found in a wide variety of freshwater wetlands, including swamps, farm dams, slow-moving rivers, coastal estuaries, and urban park ponds.

外見

This medium-sized duck is characterized by its dark brown body where each feather is delicately edged in pale buff, creating a scalloped appearance. The most diagnostic feature is its cream-colored head marked with bold, dark brown stripes: one running from the bill through the eye, and another running parallel below it. When the bird is in flight or grooming, a brilliant, iridescent emerald-green speculum bordered by black is revealed on its secondary wing feathers. The bill is a uniform lead-grey, and the legs are a dull greenish-yellow, completing its elegant camouflage.

界Animalia門Chordata綱Aves目Anseriformes科Anatidae属Anas

Pacific Black Duck

カテゴリ

鳥類

レア度

Common

危険度

1/5 · 非常に低い

スナップ

最初にスナップしよう！

おもしろい事実

Despite its name 'Black Duck', the bird is actually mostly dark brown; its name likely stems from early settlers comparing it to the darker plumage of the American Black Duck.

In New Zealand, where it is known as the Grey Duck or Pārera, it is critically endangered in its pure genetic form due to interbreeding with introduced Mallards.

They are highly nomadic during droughts, capable of flying hundreds of kilometers across the Australian continent in search of fresh water.

特殊能力

Utilizes comb-like lamellae inside its bill to filter out tiny aquatic invertebrates and seeds from mud and water without swallowing debris.

Maintains highly water-repellent feathers by distributing oils from its uropygial gland during preening, keeping it dry and buoyant.

Possesses powerful breast muscles that allow it to launch directly upwards into flight from the water's surface without a running start.

サイズと詳細

長さ: 47-61 cm
翼開長: 80-95 cm
体重: 0.8-1.4 kg
寿命: 3-8 年
Top Speed: 65 km/h
一度の産卵数: 7-13
抱卵期間: 26-30 日

食性と食事

Feeds mainly on aquatic plant seeds, leaves, and stems, supplemented by aquatic insects, mollusks, and crustaceans.

主な食物

Aquatic plant seeds
Water insects
Mollusks
Crustaceans

採餌方法

Foragingordabblingzonescanleapswimdiveflyrunglidehopperchcrawlslitherwiggleburrowambushpursuitgrazingfilteringsuckingprobingpryingpeckinggleaningscavengingpouncingconstrictingstingingvenomsuctionnectarfeedingsapsuckingfruiteatingseedeatingnutcrackingleafchewingwoodboringfungusfarmingbloodsuckingparasitismparietaleyethermoregulationelectrolocationecholocationchemoreceptionmagneticorientationpolarizedlightvisioninfraredvisionuvvisionultrasonichearinginfrasonichearingseismicsensingpressuresensingelectroreceptionchemicalmimicryvocalmimicrybatesianmimicrymullerianmimicryselfautotomyregenerationbioluminescenceinkreleasevenomousspitspineerectinginflatingfakingdeathplaydeadfleeingfreezingcamouflagedistractiondisplaymobbingherdingschoolingpackhuntingsentinelbehaviortoolusefoodcachingnestbuildingburrowingwebspinningcooperativebreedingmigrationhibernationestivationtorporparthenogenesisglowinthedarkfluorescencecolorchangingregenerativelimbsprehensiletailopposablethumbsvenomglandbioluminescentluresacidsecretionsilkspitting