Giant Cowbird Molothrus oryzivorus
Brazilian name: iraúna-grande
|Pixaim, Mato Grosso, Brazil
The Giant Cowbird male, seen here in photos 1 to 3, is almost entirely purplish-black with a ruff on the neck and a noticeably darker head. The iris varies in colour from red to yellow. The female, as seen in photo 4, is smaller and a duller black and lacks the ruff.
They are more birds of the forest than the Shiny Cowbird (Molothrus bonariensis) largely because, while they are brood parasites, they only lay their eggs in the nests of oropendolas and caciques which are forest-dwelling birds.
|They are found from Mexico to Paraguay.
There are recordings and a distribution map on xeno-canto .