16-7-2024 ROTTERDAM ZOO, NETHERLANDS - MARBLED TEAL (Marmaronetta angustirostris)

The marbled duck or marbled teal (Marmaronetta angustirostris) is a medium-sized species of duck from southern Europe, northern Africa, and western and central Asia. The scientific name, Marmaronetta angustirostris, comes from the Greek marmaros, marbled and netta, a duck, and Latin angustus, narrow or small and -rostris billed.

This duck formerly bred in large numbers in the Mediterranean region, but is now restricted to a few sites in southern Spain, southern Italy, northwest Africa and the broader Levant. Further east it survives in the Mesopotamian marshland in southern Iraq and in Iran (Shadegan Marshes - the world's most important site), as well as isolated pockets in Armenia, Azerbaijan, South European Russia, western India and western China. In general the species has nomadic tendencies. In some areas birds disperse from the breeding grounds, and have been encountered in the winter period in the Sahel zone, south of the Sahara.

Its preferred breeding habitat is temporary and shallow fresh, brackish or alkaline waters with densely vegetated shores in regions that otherwise are fairly dry. It may also breed in coastal lagoons, along slow rivers or man-made waters like reservoirs. The on average c. 12 eggs are placed in a nest covered by dense vegetation at the waters edge. It is usually on the ground, but occasionally higher among reeds or on huts made from reeds. They are common in captive collections but are a nervous and flighty bird.

These are gregarious birds, at times even when nesting. Outside the breeding season flocks are often small, although large wintering flocks have been reported in some areas. The largest winter concentration known is in Khuzestan, Iran.

In 2011, a group of Iraqi ornithologists counted a single flock of the rare marbled teal on the lakes of the Iraqi marshes, numbering at least 40,000 birds.

9-6-2023 MANDAI BIRD PARADISE, SINGAPORE - MARBLED TEAL (Marmaronetta angustirostris)

The marbled duck or marbled teal (Marmaronetta angustirostris) is a medium-sized species of duck from southern Europe, northern Africa, and western and central Asia. The scientific name, Marmaronetta angustirostris, comes from the Greek marmaros, marbled and netta, a duck, and Latin angustus, narrow or small and -rostris billed. 

30-3-2023 TABLAS DE DIAMIEL, MURCIA - MARBLED TEAL (Marmaronetta angustirostris)

https://www.inaturalist.org/taxa/7139-Marmaronetta-angustirostris

12-5-2021 EL HONDO, ALICANTE - MARBLED TEAL (Marmaronetta angustirostris)

https://www.inaturalist.org/taxa/7139-Marmaronetta-angustirostris

 

12-5-2021 EL HONDO, ALICANTE - MARBLED TEAL (Marmaronetta angustirostris)

https://www.inaturalist.org/taxa/7139-Marmaronetta-angustirostris

 

24-3-2021 EL FONDO, ALICANTE - MARBLED TEAL (Marmaronetta angustirostris)

https://www.inaturalist.org/taxa/7139-Marmaronetta-angustirostris

 

5-7-2017 EL FONDO, ALICANTE - MARBLED TEAL (Marmaronetta angustirostris)

The Marbled Duck, or Marbled Teal, is a medium-sized duck adorned with a pale sandy-brown plumage, intricately mottled with off-white markings. Its scientific name, Marmaronetta angustirostris, reflects its marbled appearance and narrow bill. The species is characterized by a distinctive dark eye-patch and a somewhat shaggy head. Adults span approximately 39–42 cm in length, with females typically being slightly smaller than males. Juveniles resemble adults but exhibit more pronounced off-white blotching.

When identifying the Marbled Duck, look for its unique pale coloration and marbled pattern. The lack of a speculum on the secondaries and the pale wings without a marked pattern are key features to note in flight. The dark eye-patch and shaggy head are also distinctive characteristics that aid in identification.

The Marbled Duck favors temporary and shallow fresh, brackish, or alkaline waters with densely vegetated shores. These habitats are often found in otherwise dry regions and may include coastal lagoons, slow-moving rivers, and man-made reservoirs.

Once widespread across the Mediterranean region, the Marbled Duck's range has now contracted to select areas in southern Spain, southern Italy, northwest Africa, and the broader Levant. Its presence extends to the Mesopotamian marshland in southern Iraq, Iran, and isolated pockets in Armenia, Azerbaijan, South European Russia, western India, and western China.

This species exhibits nomadic tendencies, with some populations dispersing from breeding grounds to winter in the Sahel zone, south of the Sahara. The Marbled Duck is gregarious, often forming flocks, which can be small or, in some cases, quite large, particularly in wintering areas like Khuzestan, Iran.

Marbled Ducks breed in habitats with dense vegetation along the water's edge. They lay an average of 12 eggs in nests that are typically on the ground but may occasionally be found among reeds or on reed-made structures.

The diet of the Marbled Duck consists mainly of seeds from plants like Scirpus and Ruppia, invertebrates such as aquatic insect larvae and pupae, tiny crustaceans, and ants. They are equipped with a gizzard to break down seeds and lamellae in their beak for filter-feeding on zooplankton. Juveniles primarily consume invertebrates and small seeds, lacking the developed gizzard of adults.

The Marbled Duck is classified as Near Threatened by the IUCN. The species faces threats from habitat destruction and hunting, leading to a decline in its population. It is protected under the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA).