Lolldaiga Hills Logo

Vervet monkey

Hilgert’s vervet monkey (Chlorocebus pygerythrus hilgerti)  

Altitude range: 1700 – 2100 m De Jong & Butynski - C.p.hilgerti - Borana (3) 
Main habitats:  Yellow fever Acacia xanthophloea woodland along Sinyai Lugga, Timau River and larger dams. 
Percentage of Lolldaiga used:  5 – 10%
Group size:  7 – 30
Abundance as of May 2015:  200 – 300 individuals  

Other information:  Elephant numbers on Lolldaiga are high (>300 individuals) and increasing.  Elephants are now causing considerable damage to the yellow fever tree woodlands. This is expected to result in a decline in Lolldaiga’s population of vervets.

DeJong & Butynski - LHL - vervet

Distribution maps prepared by the Lolldaiga Hills Research Programme; Yvonne de Jong, Tom Butynski, Julius Mathiu, Mike Roberts, Paul Benson, and Johnson Parkenga.