Other Scientific Names
Agelaius ruficapillus [BirdLife International (2004)], Agelaius ruficapillus [Sibley and Monroe (1990, 1993)], Agelaius ruficapillus [Stotz et al. (1996)]
Other Names (World)
Chestnut-capped Blackbird, Rufous-headed Blackbird
Chestnut-capped Blackbird (Chrysomus ruficapillus) [XC709785]
by Robson Silva e Silva from Firmin\u00f3polis, Goi\u00e1s, Brazil (song)
Chestnut-capped Blackbird (Chrysomus ruficapillus) [XC49111]
by Frank Lambert from Estancia el Cachap\u00e9, Chaco, Argentina, -26.53, -59.00, Argentina (song)
Subspecies
Genus often subsumed in Agelaius. Behavioural and molecular data indicate that this species is closely related to Yellow-hooded Blackbird (Chrysomus icterocephalus). Subspecies probably once separated, but now appear to meet and possibly intergrade in south-eastern Brazil (Sío Paulo).
The following 2 subspecies are recognised:
frontalis (Vieillot, 1819) - Coast of French Guiana, and eastern Brazil (Amapá, including Marajó I, east to Rio Grande do Norte, then south to Goiás, Minas Gerais and Sío Paulo).
ruficapillus Vieillot, 1819 - Eastern Bolivia (Santa Cruz) and southern Brazil (Mato Grosso do Sul east to Sío Paulo and Rio Grande do Sul) south to north-eastern Argentina (north-eastern La Pampa and Buenos Aires) and Uruguay.