Band-backed Wren (Campylorhynchus zonatus) [XC275531]
by Patricio Mena Valenzuela from Esmeraldas: Playa de Oro, village and vicinity, R\u00edo Santiago, Ecuador (call, calls)
Band-backed Wren (Campylorhynchus zonatus) [XC821356]
by rudy gelis from Mindo (near San Carlos), Cant\u00f3n San Miguel de Los Bancos, Pichincha, Ecuador (call)
Subspecies
Has been thought to form a superspecies with White-headed Wren (Campylorhynchus albobrunneus), Stripe-backed Wren (Campylorhynchus nuchalis) and Fasciated Wren (Campylorhynchus fasciatus). Sometimes considered conspecific with White-headed Wren (Campylorhynchus albobrunneus), and may hybridize with it in southern Colombia. Proposed subspecies aenigmaticus (from Nariño, in south-western Colombia) is possibly a hybrid between them. Believed by some to be possibly closely related also to Grey-barred Wren (Campylorhynchus megalopterus) as ranges overlap but no evidence of interbreeding. Proposed subspecies panamensis (described from west-central Panama) very similar to, and intergrading with, costaricensis, considered better merged with latter.