Fiona Rogers / Red-tail Monkey (Cercopithecus ascanius) in tree, Kakamega Forest Reserve, Kenya

Gerry Ellis / Mid and upper canopy interior of tropical rainforest, Kakamega Forest Reserve, Kenya

Bernard Castelein / Blue monkey family group {Cercopithecus mitis} Kakamega forest, Kenya

Rosl Roessner/ BIA / White-eyed Slaty-Flycatcher (Dioptrornis fischeri) calling, Kakamega Forest Reserve, Kenya

Rosl Roessner/ BIA / Three-banded Courser (Rhinoptilus cinctus), Kakamega Forest Reserve, Kenya

Thomas Marent / Red-tail Monkey (Cercopithecus ascanius), Kakamega Forest Reserve, Kenya

Thomas Marent / Stuhlmann's Blue Monkey (Cercopithecus mitis stuhlmanni), Kakamega Forest Reserve, Kenya

Thomas Marent / Stuhlmann's Blue Monkey (Cercopithecus mitis stuhlmanni), Kakamega Forest Reserve, Kenya

Thomas Marent / Stuhlmann's Blue Monkey (Cercopithecus mitis stuhlmanni) feeding on leaves, Kakamega Forest Reserve, Kenya

Thomas Marent / Stuhlmann's Blue Monkey (Cercopithecus mitis stuhlmanni), Kakamega Forest Reserve, Kenya

Anup Shah / Red-tailed monkeys (Cercopithecus ascanius) standing amongst the fruits of a ficus tree. Kakamega Forest National Reserve, Western Province, Kenya.

Anup Shah / Red-tailed monkey (Cercopithecus ascanius) juvenile peering through vegetation - portrait. Kakamega Forest National Reserve, Western Province, Kenya.