A worldwide community photographing and learning about wildlife
Tockus alboterminatus
Has a length between 50 and 54 cm, and it is characterized by its white belly and black back and wings. The tips of the long tail feathers are white. The eyes are yellow; the beak is red and presents a stocky casque on the upper mandible. In females, the casque is smaller.
-26.210672,32.000085, Altitude 153.980 m Lowland mixed forest, Rain season. (Siphiso rest camp)
The Bradfield's Hornbill is very similar and I hope I did not confure there two speciemens in the ID :)
Bradfield's Hornbill isn't found in Swaziland, so crowned hornbill is a safe bet.