Blue Manakin

Fascinating facts about the Blue Manakin

• In a 100 m² patch of forest, you’ll find just one to five blue manakins, a single alpha, a beta, and a few gamma helpers, turning a tiny clearing into a bustling stage.
• Each lek’s dance floor is a set of four to six horizontal vines or branches perched only about one meter above the ground, and the dominant males actually clean the perch, sweeping away moss and leaves so it looks brighter.
• At roughly 15 cm long and weighing about 25.6 g, this sparrow-sized bird is probably the biggest of all manakins, yet it still fits on the tip of a fingertip.
• Male blue manakins flash a vivid blue body, black wings, tail and head, and a red crown, while females stay olive-green, showing how extreme sexual selection can sculpt opposite-sex plumage.
• Because females are strongly hypergamous, up to 90 % of males never get to mate, a statistic that highlights how fierce competition can leave most rivals watching from the sidelines.

At a glance

About the Blue Manakin

The blue manakin (Chiroxiphia caudata) is a strikingly vivid bird of the Pipridae family, measuring about 15 cm (5.9 in) in length and weighing roughly 25.6 g (0.90 oz). The adult male dazzles with an entirely bright blue body, contrasted by black wings, tail, and head, save for a flash of red on the crown. Females and juveniles wear a muted olive-green, with juvenile males initially resembling the females before acquiring the red crown, black facial sides, and finally the full blue plumage of the adult male. Both sexes possess elongated central tail feathers, a trait that once inspired the now-abandoned name “swallow-tailed manakin.” In the wet lowland and montane forests of the Atlantic Forest, spanning south-eastern Brazil, eastern Paraguay, and far north-eastern Argentina, these sparrow-sized birds thrive even in heavily degraded former forest. Their social world revolves around lekking arenas where one alpha, one beta, and a few gamma males occupy a 100 m² plot, each perch perched about a meter above ground on vines or lianas. The alpha and beta meticulously clear moss, leaves, and twigs to keep the display perch gleaming white, a stage for the males’ elaborate songs and acrobatic dances that lure hypergamous females. Remarkably, up to 90 % of males never mate, a testament to the intense sexual selection that drives their spectacular courtship rituals, a behavior captured in the BBC’s The Life of Birds series.

Seen on screen

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