[Missionary Travels and Researches in South Africa by David Livingstone]@TWC D-Link bookMissionary Travels and Researches in South Africa CHAPTER 14 22/42
The pretty white 'ardetta' is seen in flocks, settling on the backs of large herds of buffaloes, and following them on the wing when they run; while the kala ('Textor erythrorhynchus') is a better horseman, for it sits on the withers when the animal is at full speed. Then those strange birds, the scissor-bills, with snow-white breast, jet-black coat, and red beak, sitting by day on the sand-banks, the very picture of comfort and repose.
Their nests are only little hollows made on these same sand-banks, without any attempt of concealment; they watch them closely, and frighten away the marabou and crows from their eggs by feigned attacks at their heads.
When man approaches their nests, they change their tactics, and, like the lapwing and ostrich, let one wing drop and make one leg limp, as if lame.
The upper mandible being so much shorter than the lower, the young are more helpless than the stork in the fable with the flat dishes, and must have every thing conveyed into the mouth by the parents till they are able to provide for themselves. The lower mandible, as thin as a paper-knife, is put into the water while the bird skims along the surface, and scoops up any little insects it meets.
It has great length of wing, and can continue its flight with perfect ease, the wings acting, though kept above the level of the body. The wonder is, how this plowing of the surface of the water can be so well performed as to yield a meal, for it is usually done in the dark. Like most aquatic feeders, they work by night, when insects and fishes rise to the surface.
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