Where do Grant’s gazelles live?
Grant's gazelles are especially fond of open grass plains, and although they frequent bushy savannas, they avoid areas of high grass. They are widespread throughout their range in East Africa—from Southern Sudan and Ethiopia to Central Tanzania and from the Kenya/Somali coast to Lake Victoria.
Tags: Kenya, Tanzania, Uganda, Kilimanjaro, Maasai Steppe, Samburu, East Africa
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What is a Grant’s gazelle?
Grant's gazelles resemble Thomson's gazelles but are noticeably larger and easily distinguished by the broad white patch on the rump that extends upward onto the back. The white patch on the Thomson's gazelle stops at the tail. Some varieties of Grant's have a black stripe on each side of the body like the Thomson's. In others, the stripe is very light or absent. A black stripe runs down the thigh. The Grant’s gazelle’s lyre-shaped horns are stout at the base, clearly ringed and measuring 18 to 32 inches long. On the females, black skin surrounds the teats with white hair on the udder. This probably helps the young recognize the source of milk. When a fawn is older and moving about with its mother, the dark stripe on the white background may serve as a beacon for it to follow.
The Grant’s gazelle tends to vary its diet according to season.
It will eat herbs, foliage, short grasses, and shoots. The Grant’s gazelle obtains the moisture it needs from its food. It has unusually large salivary glands, possibly an adaptation for secreting fluid to cope with a relatively dry diet.
They tend to be less confrontational as they get older.
Grant’s gazelles live in standard territorial, male-led herds. In more closed habitats, the herds tend to be smaller and more sexually segregated. Male gazelles have developed several ritualized postures to determine dominance. Younger males will fight, but as they grow older, the ritualized displays often take the place of fights. If neither combatant is intimidated, they may confront one another and clash horns trying to throw the other off-balance.
Mothers carefully guard their fawns.
Breeding is seasonal but not firmly fixed. Gestation is approximately seven months, and the young are born in areas that provide some cover. Once the fawn can stand up and has been suckled, it seeks a suitable hiding place. The mother watches carefully and evidently memorizes the position before moving away to graze. She returns to the fawn three to four times during the day to suckle it and clean the area. The lying-out period is quite long—two weeks or more. The fawn eats its first solid food at about 1 month of age but is nursed for six months. Grant's become sexually mature at about 18 months. By that time, the young males will have joined an all-male bachelor herd, but it will be some time before they become territory holders, if at all. Males from the bachelor herds challenge the territorial males, but only the strongest win territories, which they mark with combined deposits of dung and urine.