World Bird List

Species factsheet
Yellow-billed Cacique (Amblycercus holosericeus)

Order: Amblycercus holosericeus
Family: Oropendolas, Orioles, Blackbirds (Icteridae)

Voices can be found here (external link)
Subspecies and Distribution
Subspecie Distribution
holosericeus se Mexico to nw Colombia
flavirostris w Colombia to n Peru
australis n Colombia and nw Venezuela to e Peru and n Bolivia
Annoncer