All barbets play the important ecological role as seed dispersers in forests.
The family Megalaimidae has 26 species living in wooded areas from Tibet to Indonesia. You are already familiar with some of the Megalaimidae family barbets found in India like the coppersmith barbet,lineated barbet etc.
Now let us venture out to the wider world of exotic barbets!!!
The Lybiidae is a bird family containing the African barbets.There are 42 species.They are found throughout sub-Saharan Africa, with the exception of the far south-west of South Africa. Here are some of the interesting species of African barbets just to kindle your curiosity.
American barbets, family Capitonidae, are birds which inhabit humid forests in Central and South America. They are closely related to the toucans.The diet of barbets is dominated by fruit. They also take insects and other small prey.
The toucan-barbets, family Semnornithidae contains only two species.The Semnornis toucan-barbets are found in the Neotropics.They are social, and may be seen in small groups of up to five or six individuals, or as singles.The diet of these two species are made up of fruits and insects.
Barbet page @ wikipedia and its links