Bay-winged Cowbird - The Bay-winged Cowbird , also known as the Baywing, is a species of bird in the Icteridae family. It is monotypic within the genus Agelaioides, but has traditionally been placed in the genus Molothrus. It is found in the northern half of Argentina, Bolivia, Uruguay, Paraguay and southern and central Brazil, with an isolated population in north-eastern Brazil. The latter population is sometimes considered a separate species, the Pale Cowbird or Pale Baywing . The Bay-winged Cowbird has been recorded as a vagrant in Chile.