Double-toothed Barbet (Lybius bidentatus) [XC137757]
by Peter Boesman from Makerere University, Kampala, Central Region, Uganda (call)
Double-toothed Barbet (Lybius bidentatus) [XC811132]
by Andrew Spencer from West Kolwa (near Kisumu), Kisumu Central, Kisumu County, Kenya (song)
Subspecies
Relationship with Bearded Barbet (Pogonornis dubius) and Black-breasted Barbet (Pogonornis rolleti) indicated by plumage pattern and by sexual dimorphism in flank pattern. Related also, but less closely, to Black-backed Barbet (Lybius minor) and Brown-breasted Barbet (Pogonornis melanopterus). Subspecies only slightly differentiated.
Proposed subspecies friedmanni from southern Cameroon to Cabinda (northern Angola) and aethiops from Ethiopia now included within aequatorialis.
The following 2 subspecies are recognised:
bidentatus (Shaw, 1798) - Guinea-Bissau, Guinea, Sierra Leone and Liberia east to central Cameroon.
aequatorialis (Shelley, 1889) - Eastern Cameroon east to central Ethiopia, south to north-western Angola, northern Zaire, Burundi and north-western Tanzania.