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The bee-eaters are a group of birds in the family Meropidae, containing three genera and thirty species. Most species are found in Africa and Asia, with a few in southern Europe, Australia, and New Guinea.

The family name is from the genus Merop which is Ancient Greek for "bee-eater".

The three genera of the family:

1/ Nyctyornis

2/ Meropogon

3/ Merops

Merops is a large genus of bee-eaters, a group of birds in the family Meropidae, native to Africa, Asia, Australia and Europe. 
The genus name is Ancient Greek for "bee-eater".

1/ Asian green bee-eater (Trảu xanh nhỏ, Merops orientalis), also known as little green bee-eater, and green bee-eater
2/ Chestnut-headed bee-eater (Trảu họng vàng, Merops leschenaulti), or bay-headed bee-eater
3/ Blue-throated bee-eater (Trảu họng xanh, Merops viridis)
4/ Blue-tailed bee-eater (Trảu ngực nâu, Trảu đuôi xanh, Merops philippinus)

Nyctyornis is a genus of the bee-eaters, near passerine birds in the family Meropidae. There are just two members of this group, which occur in tropical south and southeastern Asia.

The name comes from the Ancient Greek nukt meaning nocturnal or night and ornis meaning bird.

1/ Blue-bearded bee-eater (Trảu lớn, Nyctyornis athertoni)