The Venezuelan Troupial, which has been introduced to several Caribbean islands.
This striking member of the blackbird family is the national bird of Venezuela. It lives in dry scrubland, savannah, and residential backyards where it consumes, fruit, seeds, insects, and other birds eggs and chicks. In addition it is an obligate nest parasite, so it can only lay its eggs in other birds nests for them to raise. A real cheater, in other words.