Dreaded Parthenium Threatening Nbi Nat Park

By Will Knocker


Close-up of Parthenium weed, an invasive species rapidly encroaching on Nairobi National Park..this is in the Park, at the Athi dam… I have also seen  invasions along the Athi River -Namanga highway & along the shores of Lake Victoria.

IF YOU SEE THIS PLANT PULL IT UP, (though gloves are advisable for big infestations)


Originally from Central America, this “noxious annual herb appears to have entered the Park in water flows , as well as on the wheels & radiators & under-carriages of vehicles & earth-moving equipment.

Parthenium infestations have CAUSED THE COLLAPSE OF MANY GRASSLAND ECOSYSTEMS AROUND THE WORLD in lands as widely spread as India & Austalia.”

“The FONNAP Natural History Guide to Nairobi National Park”


“No more than half a metre tall, Parthenium releases toxic allelo-chemicals into the soil that inhibit gowth & germination of other species. Its abundant seeds are readily dispersed by the elements.  Each seed can grow within one month into a mature plant capable of producing another 25000 seeds viable for 2 years or longer…


Parthenium contains potent allergins harmful to the health of ungulates & people.”

Contact with this plant causes dermatitis and respiratory malfunction in humans,  in cattle and domestic animals, due to the presence of toxin parthenin.

“Even in mixed forage, the unpalatable leaves,” which blister the mouths of grazers,”taint the flesh & milk of grazing animals. The extent of the potential disruption to the foodchain in incalculable.”


These pictures are taken on the Magadi Road, next to the Media College bumps, but Parthenium is now established (forever…that is the reality of Invasive Species) along all of Nairobi’s new highway & bypass verges. This is within a few yards of the Park…

Thankfully, Parthenium finds it difficult to establish itself in pristine grassland, but alarmingly, it is spreading along the roads & rivers of NNP & especially in the Athi Basi with the new pylon lines. ( No thanks to KWS.)

What can be done?

‘ If the population in cultivated field is light, it should be removed manually. Otherwise it will spread very fast and the population will reach beyond control’… a situation already reached in some parts of the Park.

Last year I organised an Invasive sp. workshop at Silole Sanctuary through FONNAP: it was well attended & we told KWS we were ready to collaborate on removing this dangerous invader from the Park.

The response: nothing.

As far as I am aware there are no efforts being made to eradicate Parthenium, or any other Invasive sp. from the Park…..

More info: http://en.wikipedia.org/wiki/Parthenium_hysterophorus

At the Athi Dam

By Will Knocker:

Pictures from the Athi Dam: surely one of the best corners (amongst many)  in NNP:


Yellow-billed storks, with an African spoonbill in the background..


Why O why have KWS allowed pylons to be built & the ENTIRE Athi Basin aesthetically spoilt in an undeveloped area (ie this would be a perfect place for future tourist development) ? Who allowed this? So short-sighted….


Diederik cuckoo: what a beautiful bird!


Egyptian goslings have to beware……


The aptly-named Black-winged stilt ….


European storks have been numerous this year….


And this is for you to ID: sorry out of focus…..palearctic migrants….ruffs??

New Fence at Main Gate

By Paula Kahumbu:

I was horrified today to see that KWS have started fencing off a huge piece of the Nairobi National Park for the major expansion of the Nairobi Orphanage. The fence follows the main road from the entrance all the way to the club house – which is almost to the ivory burn site.

I am writing to request that you help me to demand an immediate halt these plans. I have identified the following arguments; you may have others

1. Expanding the orphanage violates the very original purpose of the orphanage – to home orphans and act as a half way house before they are released. The orphanage was never intended as a zoo which is what it seems KWS wants to create. The Safari Walk on the other hand was created as a zoo – there is no need for two zoos in the same place in Nairobi. Moreover, wilderness in the National Park should not be sacrificed for the creation of or expansion of a zoo, instead a wholesome education experience through visitation to the park should be promoted as it is far more valuable.

2. The area for expansion will require the destruction of a sizeable piece of Nairobi Park. We are not aware of any EIA having been conducted, nor are we aware of any stakeholder consultation having taken place. As you know, FoNNaP which is 19 years old, has always defended the park and although our board meets regularly with the warden, there has been no consultation of these plans, and we have not been informed of these or any other plans for developments in the park.

3. We believe that these developments are in violation of the management plan of the park which is already out of date having expired a few years ago. It is also therefore a violation of the new Act which requires parks to have management plans that are developed through a stakeholder consultative process.

4. The area of land that is being fenced off will result in the destruction of highly endangered tropical highland forest including habitats for endangered add endangered species, as well as species of concern including lions, jackals, leopard, Crowned eagle (one of the only 2 nesting pairs in Nairobi nests in these trees), Suni, duiker, black rhino and bush pig all live in this part of the forest. I am sure there are also plants, birds and other animals that will also be threatened. By degrading this habitat and alienating it from the park the KWS will be violating the EMCA, and failure to consult the stakeholders is in violation of the constitution.

I have written to the Director KWS, NEMA Director and the CS to respectfully request the immediate halt to the ongoing fencing of the park, as it is not too late to restore any damage already caused.

I have also asked for an investigation to be initiated into how this proposal was developed and passed without any stakeholder consultation or EIA.

Please help by sending your own letter to the Cabinet Secretary, KWS Director (Director@kws.org) and NEMA DG on this issue so that they can see how serious this is.