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.
