Mareca strepera
An understated grey duck that rewards a closer look.
Size: 46-56 cm | Habitat: Pond, Lake & River Birds | Season: All year
Easily dismissed as 'just a brown duck' at a distance, the male gadwall is in fact a finely marked grey bird with a black rear end and a delicate scaled pattern across the body, visible up close. Females closely resemble a female mallard but have a thinner, orange-sided bill.
Male: grey body with intricate fine markings, black tail-end, steep forehead · Female: mallard-like but slimmer, orange-edged bill · white patch on inner wing, often hidden at rest
Gadwall dabble and up-end for food like mallards but also steal food that diving ducks and coots bring to the surface. They are quieter and less conspicuous than most ducks, often overlooked among mallards.
The gadwall's plain grey looks hide a surprisingly intricate feather pattern — binoculars turn this 'boring brown duck' into one of the most delicately marked birds on the water.
The Gadwall (Mareca strepera) is often dismissed at a glance as "just a brown duck," but closer inspection reveals a male with an intricately patterned grey body, a black stern, and a steep, almost square-cut head profile that helps separate it from the similar female mallard.
Gadwall feed mainly by dabbling and up-ending like mallards, but they are also notable kleptoparasites, snatching food items — particularly aquatic plants — that diving ducks and coots bring up from deeper water. A relatively recent colonist to Britain, the species has spread steadily from a handful of introduced and natural populations since the 19th and 20th centuries.
Understanding the gadwall is a good reminder that plain plumage can hide fine detail worth a closer look, and that not every duck on a lake got there by breeding here originally — some of Britain's waterbirds have surprisingly recent and human-influenced histories.
🟠 Conservation status: Amber (UK Birds of Conservation Concern 5)
Amber-listed. The gadwall is a relatively recent colonist to Britain, and although its numbers have grown steadily since the 20th century, the UK breeding population remains small and concentrated at a limited number of wetland sites. This localised distribution is the main reason for its Amber status, despite an encouraging long-term increase.
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