David Mascall’s Light for Life – Lion entry deterrent systems

“Lion lights” prevent predators from attacking livestock to reduce human retaliation
One man – one homestead at a time.

How Light for Life Helps

David Mascall showing Massai patoralists how the Lion Lights work.

Light for Life cares for both, the predators and the people

Light for Life is a small NGO in Kenya, mainly focused around the Nairobi National Park and the Massai Mara. Light for Life installs completely donor funded predator entry deterrent systems to reduce human-wildlife conflicts. The sytem’s flashing lights are visible from up to 2 km away. The system boasts a 98% success rate, benefitting Massai pastoralists and iconic wildlife likewise. David Mascall, the founder of Light for Life has perfected the flashing "Lion Lights". The installation at a small boma (homestead) cost $350 including all materials and installation and it guarantees a lifespan of up to 5 years.

Lion Entry Deterrent Systems  (LEDs), colloquially called "Lion Lights", utilize flashing solar-powered LED lights.

A sketch of The Lion Entry Deterrent System David mascall develloped.

These flashing lights imitate human presence by mimicking herders using torches at night to safeguard their livestock, creating a visual disturbance that discourages lions and other predators from entering the Massai bomas (cattle, goat and sheep enclosures), thereby enhancing safety for animals and humans especially in regions prone to lion encounters. 

David Mascall installing the battery of the LED (Lion Entry Deterrent System)   David Mascall sitting in a boma installing Lion Lights   David Mascall explaining his Lion entry Deterrent system to the public

 

 

 

 

 

We help Massai families to protect their livelihood

The Maasai, a semi-nomadic pastoralist community that migrated into Kenya and Tanzania during the 17th and 18th centuries, have long regarded cattle as central to their identity, livelihood, and spiritual beliefs. Their nomadic lifestyle revolves around roaming the savannahs with their herds. Today, however, many Maasai communities are settling down, which has introduced new challenges—particularly the increased threat to their livestock from predators. Once installed, these enclosures are equipped with lifesaving flashing lights that operate automatically. We believe these installations should be funded by donors, with recipients only needing to contact David when the battery power begins to dwindle—typically after four to five years.

Despite their efforts to preserve their traditional Maasai culture, increasing urbanization and the designation of areas once used for grazing to national parks and reserves have significantly restricted their ability to freely herd cattle across expansive lands. As a result, the Maasai have increasingly shifted from their traditional nomadic pastoralism to a more sedentary lifestyle. 

Image of a traditional massai with a wild lion

The reality how Massai live today is quite different from the past. They have evolved, and many aspects of their lifestyle, including lion hunting, have changed. Due to conservation efforts and changing attitudes, the traditional lion killing has become rare. The Maasai are now more involved in wildlife conservation projects, recognizing the importance of lions in the ecosystem and the tourist industry, which benefits their community. 

Lioness in Nairobi National Park sitting on a traffic sign

The pastoralists living around Kenyas National parks are willing to tolerate this uneasy coexistence by leaving the remaining corridors open and giving up economic activities that are not in line with wildlife conservation, such as crop farming or keeping large herds of livestock, if both government and wildlife conservation organisations ramp up compensation processes for their losses while compensating them financially for protecting biodiversity. 

David Mascall's "Lion Lights" help to secure the bomas (Homesteads) around the park borders. One boma at a time. 

Massai Lion Lights beneficiaries

 

Lioness in Nairobi National Park sitting on a traffic sign

We save predators from their biggest threat: retaliation

Lions face a variety of threats. Humans are one of the biggest. Lions have few predators to fear other than humans. Lions are most threatened by humans who hunt them and encroach on their habitat. The main reason for lion killings is in retaliation following killing of livestock, as well as injuring or killing of people. Conflicts between lions and people arises when lions attack and kill livestock, which often triggers farmers to retaliate by killing lions. Kenya's lions are mostly endangered by Human-Lion Conflicts.

Human-Lion-Conflicts

KWS rangers save a nursing Lioness - Image @ KWS  

Retaliatory killing in its worst form is conducted using poison which can kill entire prides and a host of other species—from elephants to vultures to wild dogs, leopards and cheetah. 

Poisoning and Targeted Poaching

Communities react to lions killing livestock with poisoning the lions Image @ KWS

With rapidly growing human populations, there are increasing influxes of livestock and herders in search of better grazing within wildlife areas across Africa – resulting in more conflict between people and lions. Livestock also compete with wildlife for resources, causing declines in the wild prey lions depend on. In many cases influxes of herders are also associated with secondary problems such as elevated poaching. Many such movements of people into lion landscapes result in complete habitat loss due to conversion to agriculture and settlement.

There is also a threat in certain parts of Africa from the targeted poaching of lions for their body parts, such as skins, claws, teeth and bones. 

Loss of Habitat Connectivity

Human settlement and development are gradually creating ever smaller and more isolated pockets of wilderness in which lions and their prey exist, making it challenging or impossible for lions to roam or disperse safely and restricting gene flow which leaves populations vulnerable to disease and other threats. 

Historic and present distribution of Lions Image @ Tommyknocker

The Maasai are becoming farmers. One cause of shrinking predator habitats is human population growth. Over the past 50 years, Kenya’s population has tripled, bringing significant changes. In the Kenyan ecosystem, many Massai are shifting from traditional pastoralism to farming around the protected areas. Land is concerted into crops while still maintaining strong cultural and economic ties to cattle herding. This expansion of farming reduces natural habitats, leads to more elephant crop raiding, and decreases pasture land. As a result, many Massai now take their cattle into the national parks and reserves for grazing. Supporting livestock farmers with Light for Life's predator entry deterrent systems is a small, but important piece in the puzzle of predator conservation in Kenya. 

David Mascall

Saving lives – one boma at a time

David Mascall, affectionally known as Papa Simba, has dedicated his life to saving the African lion. He spent over 12 years working at Nairobi National Park’s orphanage, caring for and rehabilitating orphaned lions. Many arrived as orphans due to poaching, disease, or conflicts with farmers.

Kenya’s lion population has plummeted from 15,000 in the 1980s to fewer than 2,000 today, with the Maasai Mara losing 70% of its wildlife in a decade.

By his sixties, David focused on raising awareness that lions represent Kenya’s soul, warning that neglect threatens both their survival and the country’s safari reputation. In 1997, over 30 lions were killed outside Nairobi National Park, leaving only six survivors. More lions were killed in 2003 and 2006, often in retaliation for livestock losses.

Lions often follow prey animals out of the park, risking conflicts with humans. Since 2010, David has developed lion deterrent systems and founded Light for Life NGO. His “Lion Lights,” solar-powered deterrents, have been installed over 1,000 times.

Now nearing 80, David continues installing and training locals in community areas near the park. His work aims to protect lions, other predators, and local pastoralists.

Please support David Mascall and Light for Life Kenya by donating to help save Kenya’s majestic lions and support the Maasai communities.

Videos

Installing a life-saving Lion Entry Deterrent System 

David Mascall, the renowned lion expert, has installed Lion lights for 1000 bomas since 2012. In his system there is a charge control unit in a white box regulating the power, which is charged by a solar panel on the top. All the lights are connected by a cable about two feet underground. Through this system the lights all flash simultaneously, and can be seen from three miles away. https://www.youtube.com/@Southerndreams-Wildlife 

Watch this short video that shows David Mascall, founder of “Light for Life” and his fight against retaliated killings of Lions, Leopards and other predators. His light systems successfully protect Massai homesteads against attacks on livestock at night. A wonderful initiative to protect Africa’s remaining wild predators. Standup - Shoutout - info@suso.world 
- http://suso.world/

Watch this short video that shows David Mascall, founder of “Light for Life” and his fight against retaliated killings of Lions, Leopards and other predators. His light systems successfully protect Massai homesteads against attacks on livestock at night. A wonderful initiative to protect Africa’s remaining wild predators.
Copyright Standup - Shoutout - info@suso.world - http://suso.world/

This documentary shows David Mascall, founder of "Light for Life" and his fight agains retaliated killings of Lions, Leopards and other predators. His light systems successfully protect Massai homesteads agains attacks on livestock at night. A wonderful initiative to protect Africa's remaining wild predators.
Producer: Andreas Knausenberger
Supported by:
Community Wildlife Fund
Sunworld Safaris Ltd.
Viewfinders EPZ Ltd.
Wildfocus Expeditions
www.community-wildlife.org

Short 1 Minute video about "Light For Life", founded by David "the lionman" Mascall, promote LED (Lion Entry Deterrent) Systems as a solution to protect lions and other wildlife from becoming victims of human-wildlife habitat conflicts.
Jason Lindley talks to David Mascall about his 'Light for Life' predator entry deterrent systems, designed to help protect local communities from predator attacks and the predators from deadly retaliation.
"We are on the way down, our children, our grandchildren, many of them will never see anything of a live lion, they will just see it in a book, a picture.
Isn't that sad?"
RED LIST CONSERVATION
150 km is a short distance for a young lion searching his future home. Lion Lights prevent Human-Wildlife-Conflicts along his way. Link to donations in first comment. Kenya's Ol Pejeta conservancy, located 150km from the capital Nairobi, has decided to fit its lions with GPS collars in a bid to study the animals in greater details and with minimal interference. The GPS data allows the rangers to gather information on the exact location of the animals, thus determine potential kill sites for lion prides.
Read more about Human-Wildlife-Conflicts
Nairobi's residents are on alert not for an impending militant attack but for two lionesses that have gone missing from a national park on the outskirts of the Kenyan capital.
A huge operation is currently underway to find the animals which went missing Thursday night. They were last seen in the densely populated neighborhood of Langata.
A toll free telephone number has been made available for the public to contact authorities with information about the animals.
"The lions are dangerous wild …
Read More about the Operation in Langata

BLOG

Installation of Lion Lights honoring grand dame Jane Goodall

In Memory of Jane Goodall 2025

Some wonderful people sent funds with Remitly for the installation of this very special Jane Goodall Memorial boma. Jane Goodall was the epitome of the finest possible conservationist who spent…
Read more
David Mascall with a rescued Cheetah

A Big Cat Deterrent System!

One of the greatest threats to predators in the wild is human-wildlife conflict. For example, over 90 % of cheetahs live outside protected management areas, alongside human communities raising cows,…
Read more

INSTALLATION VIDEOS

THE BENEFICIARIES

A light for Life installation honoring grand dame Jane Godall

10. October 2025

eci

19. September 2025

16. September 2025

23. September 2025

19. September 2025

On the outskirts of the Emakoko area adjoining the Nairobi National park boundary lives Francis Lenitony.

16. September 2025

ranny Saropa Romo. Frequent loss of her livestock had her family rebuild her enclosures

2. September 2025

Elizabeth Wanjiru will no longer have to worry.

26. August 2025

16. August 2025

12. August 2025

Jackson's wife Faith Sorora

5. April 2024

22. July 2025

Lawrence Moi with David Mascall

15. July 2025

Mama Mary and son Thomas

10. July 2025

Mary Wambui

2. July 2025

Benson Lelion

25. June 2025

Hellen Larmol and Family

14. June 2025

Jackson Lankau Milaigat

7. June 2025

Kelvin Sentero

20. May 2025

6. April 2024

5. December 2023

David Mascall explaining the Lion Lights to Onesmus ole Irungu

20. May 2025

5. December 2023

5. November 2023

28. October 2023

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International Transfer

Home 4 Paws Trust
NCBA BANK KENYA PLC, NCBA CENTRE, MARA AND RAGATI ROAD, UPPER HILL, NAIROBI, Kenya
Swift Code CBAFKENX
IBAN 66100570035

Donations from South Africa

Home for paws trust
Capitec Bank
Savings Account 2330788688

Mpesa

David +254716887107