As elsewhere, so in Africa, one of the great secrets of success in big game shooting is to be up early and on the feeding grounds at daylight, when everything is in favour of the stalker. In the early morning most game will be found feeding, and will be more easily seen when so occupied than later on in the day when lying down in the shade of a tree or bush, with only one of the herd standing up. This beast, if it is the sentinel of a herd, will in all probability be a female, or a male with an inferior head, as the old bulls and bucks rarely act sentry; or it may be a solitary individual not worth stalking. The stalker, being possibly a long way off at the time of sighting it, and unable to see whether there is a herd lying concealed near it in the grass or not, may miss a good chance at a beast with a first-rate head through a pardonable dislike to going a long way out of his track on an off-chance. But when feeding the stalker has a good chance of examining with his binoculars each individual beast in the herd, he can compare one with another, and mark those with the best heads. Then, again, in the early-morning the air is fresh and the ground cool, and a long stalk is not nearly so fatiguing then as later on; whilst in the cool hours of the early morning it is much easier to judge distances, as the air is clear and there is no haze. This haze, which only appears after the sun is well up, is caused by the moisture of the earth being evaporated by the sun. It is most noticeable after a heavy dew or a shower of rain, and is not only very apt to deceive even the most experienced in regard to distances, but as it makes everything appear to be in a perpetual quiver, it renders shooting very difficult. When taking a sight under such conditions the beast aimed at will often appear very indistinct, and will seem to move about in front of the muzzle of the rifle.