Specimens of Bushman Folklore, by W.H.I. Bleek and L.C. Lloyd, , at sacred-texts.com
It (the Saxicola Castor) says: "Tcha, tcha, tcha, tcha," when it is laughing at the wild cat, when it has espied the cat, while the cat is lying down, lying asleep; and it is laughing at the cat, on account of it.
The other little birds (hearing it) go to it, they are all laughing at the cat.
[1. The |ka-kau or Saxicola Castor is a little bird found in Bushmanland. It lives in trees and flies about. It is not eaten by Bushmen.]