The vangas are a group of little-known small to medium-sized passerine birds restricted to Madagascar. Their relationship with other passerine groups's uncertain, but they seem most closely related to several other enigmatic African groups, such as helmetshrikes (Fuchs et al., 2004). Several of these species (including Van Dam's, Rufous and Sickle-billed) can be found in the Madagascar dry deciduous forests. They're usually shrike-like, arboreal forest birds, feeding on reptiles, frogs and ins… (More on Vanga)