The Shiny Cowbird is a medium-sized bird native to parts of Central and South America, particularly in regions like Colombia and Brazil. It is known for its glossy black plumage, which can appear iridescent in sunlight. Males are larger than females and have a distinctive yellow eye, while females are brown and less conspicuous. This bird is a brood parasite, meaning it lays its eggs in the nests of other bird species, such as sparrows and finches. The Shiny Cowbird's young often outcompete the host's chicks for food and resources, which can negatively impact the host species' survival.