Flying steamer duck

Lore & Background

Flying steamer ducks are the smallest of the four Tachyeres species. They share similar plumage with other steamer ducks, including female brown head and neck feathers with white stripes from eyes to nape, brown-gray gradient body feathers, white underbellies, and orange feet. Females have smaller orange bills with black tips, while males have darker gray bills with slight yellow accents. Males are heavier but have smaller cranial elements and wingspans than females. Both sexes possess cornified orange carpal knobs used in display and combat.

Reader's Guide

The flying steamer duck is significant for its unique position among steamer ducks as the only flighted species, making it a key subject for studying the evolution of flightlessness in birds. Its distribution is wider than that of its flightless relatives, likely due to its flying ability. The species exhibits notable behavioral traits, including intense territorial aggression and pugnacity, often attacking other species without apparent reason. Its breeding rituals are poorly understood but involve highly ritualized mating displays. The species is not endangered, though nest predation by introduced American minks poses a potential future threat in Tierra del Fuego.

Did You Know?

• Some individual male flying steamer ducks are incapable of flight due to excessive size and wing loadings.
• Flying steamer ducks undergo three molts per annual cycle, varying with geographic location.
• Males have three distinct grunt types described as 'rasping', 'ticking', and 'sibilant'.
• The species has been observed to kill Red shovelers for seemingly no apparent reason.