One morning our oxen, which were feeding near, suddenly started off in every direction, leaping, twisting, and turning about, and cutting the most ridiculous capers. They looked as if they had been seized with Saint-Vitus's-dance. On running towards them I discovered that a large flock of birds were clinging to their backs--three or four on each animal. Having my gun in my hand, I shot one, when I found that it was the same bird which I had seen on the back of the rhinoceros. Senhor Silva, who arrived laughing heartily at the commotion among our animals, told me that the bird is called the _Buphaga Africana_. Its object in thus taking possession of the backs of the cattle is for the purpose of feeding on the ticks with which they are covered. They have particularly long claws and elastic tails, which enable them thus to cling to the hide, and to search every part of the beast, in spite of its efforts to get rid of them. When animals are accustomed to these birds they appear rather grateful for the visitation; but Mr Fraser's oxen had apparently never experienced a similar visitation, and were therefore considerably astonished at being thus unceremoniously assailed. By degrees, however, when they found that they could not throw them off, and that nothing very terrible happened, the oxen remained quiet, and were probably much more comfortable from being delivered from their parasitic pests. The necessity of supplying our camp with meat compelled us frequently to go out shooting. We greatly missed, on these occasions, Stanley's unerring rifle. Our party generally consisted of Senhor Silva, Timbo, and myself; but sometimes Mr Fraser took Senhor Silva's place; and he was, I must say, the best shot of the party. We had been unsuccessful, however, on several occasions, and though there was no famine in the camp, we had very little meat fit to eat; while our black attendants were beginning to grumble greatly at being placed on short commons. This made us more than ever anxious to get some game. We had scoured the country towards the south for some distance, and falling in with no animals, we were induced to proceed further off than usual. The country over which we were passing was a fine undulating plain. Now and then there were dips of sufficient depth to conceal us from each other, for we rode apart in order to cover a wider extent of ground. My companions were not in sight. I had reached a slight elevation, when I saw in the distance a herd of large animals. At first I took them for buffaloes; but their movements soon convinced me that they were of the antelope species. The wind fortunately came from them, and I determined, without waiting for my friends, to endeavour to bring one of them down. I galloped on, till, to my delight, I saw before me an immense herd of the large eland, as they are called, or, more properly speaking, "cana." In stature they are equal to a good-sized horse. Their horns are long and spiral.