Double Crossing

The migrating herds of wildebeest and zebra are advancing towards the Greater Mara. The herds have already crossed Sand River on the Kenya-Tanzania border and are now at the Burrungat Plains, heading towards Possee Plains. There has been some rain that has sped the movement of the migration. Some herds have crossed the Olkeju Rongai River and lots more are in the Olmisigiyioi area advancing towards Possee Plains.

With the rains still in the northern part of the Mara we expect that in a few days’ time the herds will be crossing the Talek River into Olkiombo moving towards the rain and thunder storms which they can smell from afar.

Another herd is expected to cross Sand River heading towards Keekorok in a few days.

Below Lookout Hill on the southern side are other big herds that seem to be moving towards Mara River. They may be crossing into the Mara Triangle for the new fresh grass that is very nutritious for them.

The resident herds are also in plenty at Topi Plains and Double Crossing. The Topi Plains herds are headed towards Paradise Plains. The herds at Double Crossing are also crossing the Ntiakitiak River and moving towards the Talek River and will be crossing the Talek River to meet up with the main herds at Possee Plains.

As all this is happening the predators are having a field day. The lions, leopards, hyenas and the crocodiles in the rivers are feasting as the food moves through their territories. Flocks of vultures are seen circling and descending on carcasses that have been fed on by other predators.

By Koikai, senior naturalist and driver-guide at Mara Intrepids/Explorer Camps

Eastern Colobus Monkey, Impala & Warthogs At The Lodge

For the first time, a male colobus monkey (Colobus abyssinicus) was seen at the Great Rift Valley Lodge. This is seen as a good sign, for these shy creatures are rare and very selective feeders. Being arboreal, they spend their time in tree tops and feed on leaves.

A lone male was seen at the lodge, feeding on the ipomoea flowers which are now common around the tennis courts and the surrounding bushes.

We hope that he will be joined by the rest of the troop. They are common around Lake Naivasha and the Crater Lake which are seven and eighteen kilometers away respectively.

Fact File

The name “colobus” is derived from the Greek word for “mutilated,” because unlike other monkeys, colobus monkeys do not have thumbs. Their beautiful black fur strongly contrasts with the long white mantle, whiskers and beard around the face and the bushy white tail. The Eastern black-and-white is distinguished by a U-shaped cape of white hair running from the shoulders to lower back, whereas the Angolan black-and-white has white hairs flaring out only at the shoulders.

Habitat

There are three types of colobus monkeys found in Kenya. The Angolan colobus monkey is found at the coastal forests, the Guereza colobus in inland high-country areas. The Red colobus monkeys, the rarest are found in the forests of the Tana Delta.

Behavior

The colobus is arboreal and only rarely descends to the ground. It uses branches as trampolines to leap up to 50 feet across. Their mantle hair and tails are believed to act as a parachute during these long leaps.

Colobus monkeys live in troops of about five to 10 animals—a dominant male, several females and young. Each troop has its own territory which is well defined and defended from other troops. Adult troop members, especially males, make croaking roars that can be heard resonating throughout the forest.

Fighting over mates rarely occurs. There is no distinct breeding season although most mating probably occurs during rainy season. Because a female suckles her infant for over a year, an average of 20 months passes before she gives birth again. Other troop members often handle very young infants. In the first month when the infant still has a pink face, it may be handled three to five times an hour in resting groups. Infant mortality is high even though the young are carefully tended.

The newborn colobus monkey is covered with white fur, and at about 1 month gradually begins to change color, finally gaining the black and white adult coloration at about 3 months. The infant monkey is carried on the mother's abdomen, where it clings to her fur. As it matures it spends a lot of time playing with its mother and certain other adults and at about 7 months begins playing with other juveniles. The games they play exercise their bodies, and as they get older, these develop into wrestling matches and mock displays.

Diet

Colobus monkeys are strictly leaf-eaters and spend most of their time in treetops, preferring to eat the tender young leaves found there. Their complex stomachs enable them to digest mature or toxic foliage that other monkeys cannot.

Predators and Threats

At one time the colobus was hunted excessively for its beautiful fur, leading to its extermination in some areas. Its skin has been used to make costumes, hats and capes. Today, the greatest threat to it is the loss of habitat as forests are cut down.

Did You Know?

• The name colobus derives from a word meaning "mutilated one" because unlike other monkeys they do not have thumbs.
• The monkeys communicate with a song-like call, a warning call and a mating call. Local tradition says they are good weather forecasters because they become silent when bad weather is coming. 

 Resident Impala and Warthogs

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The new bush dinner area is called Volans after the flying fish. It is named after a constellation. It can be seen from the Lodge during the star gazing sessions but its visibility depends on the time of the year.

In addition, there are now twelve resident impalas and three warthogs living on the grounds of the Lodge, happy with all the grass they have around them to feed on.

A nature walk at the lodge has become one of the most interesting activities.

Report by Daniel Kilonzo, Resident Naturalist at Great Rift Valley Lodge and Golf Resort. Pictures, File.
 
Heritage Hotels (Kenya) manages The Great Rift Valley Lodge and Golf resort in Naivasha, just an hour an a half's drive from Nairobi. The lodge is famous for one the longest holes in Kenya - the par 5 -  17th ‘signature’ at 598 metres (654 yards)!
 ©Heritage Hotels Ltd, Kenya.