The sickle-billed vanga (Falculea palliata) is a species of bird in the vanga family Vangidae. It is monotypic within the genus Falculea. It is endemic to Madagascar. Its natural habitats are tropical dry forests and tropical dry shrubland.
I took these photos in the car park at Ankarafantsika NP.
Sickle-billed Vangas can be found in western Madagascar and if you want to get them easily, there is at least one nesting pair in the car park of Ankarafantsika. They are there throughout the day. They can also be seen in Ifaty and Andohahela NPs.
The only embeddable clip I could find appears to be at a bird park but at least you can see the bird close up and hear his call. For wild Vangas, there are some clips on IBC.