Oserengoni Wildlife Reserve spans 18,000 acres in the Great Rift Valley, west of the Aberdare Mountains and northeast of the Mau Escarpment. Bordered by Lakes Naivasha and Oloidien, this private area combines savanna, wetlands and acacia forests, and is home to over 300 bird species as well as rare mammals such as the Rothschild giraffe and Grevy's zebra.

Why visit Oserengoni

The reserve stands out for its private status, which allows for fine-tuned wildlife management and lower visitor numbers compared to neighbouring national parks. You'll encounter species that are difficult to observe elsewhere in Kenya, set within diverse landscapes blending lakeside shores, open plains and volcanic terrain. Activities extend well beyond the classic 4x4 safari: guided walks, night drives, boat excursions on Lake Naivasha and horseback riding. This versatility makes the site suited to families and travellers already familiar with East Africa alike.

History of the sanctuary

The sanctuary was established in 1995 by Hans Zwager, his wife June and their son Peter. The Zwager family resides at Oserian, on the shores of Lake Naivasha, where they rank among Kenya's leading flower producers. The creation of the reserve stemmed from a desire to preserve local biodiversity and support sustainable development linked to horticultural activities.

In the late 1990s, several species were introduced to enrich the site's genetic heritage: white rhino, topi, Grevy's zebra, wildebeest, Thomson's gazelle and crescent antelope. Following several poaching incidents, the rhinos were relocated to other, better-protected sanctuaries. The other reintroduced species have thrived and today contribute to the reserve's richness.

What to see in the reserve

Mammals

You can observe giraffes, zebras, buffalo, eland and warthogs roaming freely. Among the remarkable species:

• the Rothschild giraffe, an endangered subspecies whose population is closely monitored;
• Grevy's zebra, classified as critically endangered;
• colobus monkeys, found in wooded areas;
• the aardvark, discrete and mainly nocturnal;
• a significant hippopotamus population near Lake Naivasha.

Birds

Diverse habitats (forests, grasslands, wetlands) attract over 300 recorded species. Among the most visible: the African fish eagle, grey heron, several kingfisher species and pink flamingos frequenting shallow waters. The Lake Naivasha shoreline is a particularly productive observation post for aquatic and wading species.

Landscapes

The reserve combines expanses of acacia-dotted savanna, rocky escarpments and lakeside shores. The contrast between the waters of Lakes Naivasha and Oloidien and the surrounding volcanic terrain offers varied photographic settings throughout the day.

Practical information

• Status: private reserve, access by reservation through partner lodges.
• Duration of visit: plan a minimum of half a day for a safari, ideally 1 to 2 nights on-site to combine several activities.
• Accommodation: lodges and camps located within or on the edge of the property.
• Rates: moderate day entry, all-inclusive packages with accommodation and activities higher. Prices vary by season.
• Guidance: local guides mandatory for all outings, including horseback and walking safaris.

Activities offered: 4x4 safaris, walking safaris, night drives (leopards, hyenas, servals subject to availability and current regulations), boat trips on Lake Naivasha and horseback rides suited to all levels.

When to visit

The dry season, from June to October, remains most favourable for wildlife viewing: sparse vegetation makes spotting easier and animals concentrate around water points. Days are warm, nights cool, and many migratory birds are present.

The rainy season is split between short rains (November to December) and long rains (March to May). The landscape turns lush, births are numerous and migratory birdlife particularly active. Some tracks may be difficult to access and certain activities such as walking safaris may be occasionally limited.

How to get there

The reserve is located in the Naivasha region, accessible from Nairobi via the A104 road in 1.5 to 2.5 hours depending on traffic. From the town of Naivasha, allow around thirty minutes on dirt tracks to reach the reserve's entrances. A 4x4 vehicle is recommended, especially during the rainy season. Most lodges arrange transfers from Nairobi or from Naivasha airstrip.

Nearby attractions

The Lake Naivasha region concentrates several complementary sites easy to include in the same circuit:

• the Hell's Gate National Park, a direct neighbour, renowned for its gorges and cycling routes;
• the Crescent Island Sanctuary, accessible by boat from Lake Naivasha;
• the Giraffe Centre in Nairobi, to observe the Rothschild giraffe in a protected setting;
• Kakamega Forest, further west, to extend your journey into a primary forest ecosystem.

Frequently asked questions

Plan your trip

Oserengoni Reserve fits naturally into an itinerary combining the Naivasha region and the country's major southern parks. To build a bespoke stay, explore our Kenya travel ideas and we'll tailor the programme to your interests.