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Molothrus bonariensis male (Shiny Cowbird / Chamón) | by PriscillaBurcher
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Molothrus bonariensis male (Shiny Cowbird / Chamón)

The Shiny Cowbird is a sexually dimorphic, brood-parasitic icterid. The male is entirely glossy violet blue-black or purplish black. The female dull grayish brown above.


The Shiny Cowbird has a very wide and expanding distribution in South America and the Caribbean. A brood parasite, the species lays its eggs in the nests of many species of passerines throughout its range, and provides no parental care for eggs or young.


Shiny Cowbirds often ride on the backs of cattle, horses, and sheep while feeding.

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Taken on March 12, 2014