Other Scientific Names
Agelaius cyanopus [BirdLife International (2004)], Agelaius cyanopus [Sibley and Monroe (1990, 1993)], Agelaius cyanopus [Stotz et al. (1996)]
cyanopus Vieillot, 1819 - Eastern Bolivia (Santa Cruz) and central and southern Brazil (southern from Mato Grosso and western Sío Paulo) southern across Paraguay to north-eastern Argentina (south to north-eastern Buenos Aires) and western Uruguay.
atroolivaceus (zu Wied-Neuwied, 1831) - Coastal plain of eastern Brazil from Espírito Santo south to Paraná.
unicolor Swainson, 1838 - North-eastern Brazil (Amapá to Pará and north-western Maranhão) south through central Brazil to north-western Paraná and western São Paulo; intergrades with atroolivaceus in southern São Paulo.