Black-billed Koel (Eudynamys melanorhynchus) [XC825269]
by David Farrow from Bogani Nani Wartabone, Tambun Maleo Sanctuary, Dumoga Timur, Bolaang Mongondow Regency, North Sulawesi, Indonesia (call)
Black-billed Koel (Eudynamys melanorhynchus) [XC152025]
by Mike Nelson from Bogani Nani Wartabone National Park, Sulawesi, Indonesia (call, song)
Subspecies
Considered by some authors to be a subspecies of Western Koel (Eudynamys scolopaceus).
The following 2 subspecies are recognised:
melanorhynchus S. Müller, 1843 - Sulawesi, Sula Islands.
facialis Wallace, 1863 - Sula Is. Considered by some authors to be a subspecies of Western Koel (Eudynamys scolopaceus).