Dendronanthus, or forest wagtail, is a wagtail genus in the family Motacillidae.
It has some distinct features:
- a distinctive plumage that sets it apart from other wagtails, 
- has the habit of wagging its tail sideways unlike the usual up and down movements of the other wagtail species,
- is the only wagtail species that nests in trees.

Dendronanthus: "Dendron" (δένδρον) is the Greek word for "tree"; Anthus introduced for the pipits.

1/ Forest Wagtail (Chìa vôi rừng, Dendronanthus indicus)

Vietnam Adventure Travel