Lybius dubius "Bearded Barbet (Lybius dubius)" by Leszek.Leszczynski via Flickr, Creative Commons Attribution.

Lybius torquatus "Black collared barbet (Lybius torquatus) in my back yard. It was not after the seeds, but some apple" by Derekkeats via Flickr, Creative Commons Attribution ShareAlike.

Taxonomy:

Lybius bidentatus aequatorialis (Add)
Lybius bidentatus bidentatus (Add)

Lybius dubius

Lybius leucocephalus adamauae (Add)
Lybius leucocephalus albicauda (Add)
Lybius leucocephalus leucocephalus (Add)
Lybius leucocephalus leucogaster (Add)
Lybius leucocephalus lynesi (Add)
Lybius leucocephalus pareensis (Add)
Lybius leucocephalus senex (Add)

Lybius minor macclounii (Add)
Lybius minor minor (Add)

Lybius torquatus

Lybius torquatus bocagei (Add)
Lybius torquatus congicus (Add)
Lybius torquatus irroratus (Add)
Lybius torquatus lucidiventris (Add)
Lybius torquatus nampunju (Add)
Lybius torquatus pumilio (Add)
Lybius torquatus torquatus (Add)
Lybius torquatus vivacens (Add)
Lybius torquatus zombae (Add)

Lybius undatus leucogenys (Add)
Lybius undatus salvadori (Add)
Lybius undatus thiogaster (Add)
Lybius undatus undatus (Add)

Lybius vieilloti buchanani (Add)
Lybius vieilloti rubescens (Add)
Lybius vieilloti vieilloti (Add)