There are two types of cowbirds in seen in Cuba.
The Brown-headed Cowbird is the most common and widespread cowbird of the group. The Shiny Cowbird, which is seen in small numbers in North America, prefers a more tropical climate such as Cuba.
The cowbirds are brood parasites, which means that the female cowbird will lay her eggs in the nest of other bird species. These eggs are then abandoned by the cowbirds, leaving them to be hatched and the young cowbirds to be raised by the unknown parent birds of the nest. The young cowbirds are more aggressive than the parent's own young and these young cowbirds will push the young of the parent birds from the nest to perish, ensuring they will get all the food to survive.