Anup Shah / Crested Mangabey (Cercocebus galeritus) juvenile on fallen tree, Tana River Primate Reserve, Kenya

Fiona Rogers / Black-faced Vervet Monkey (Cercopithecus aethiops) juvenile in tree, Elsamere, Lake Naivasha, Kenya

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

Anup Shah / Black-faced Vervet Monkey (Cercopithecus aethiops) young climbing tree, Elsamere, Lake Naivasha, Kenya

Anup Shah / Crested Mangabey (Cercocebus galeritus) juvenile on fallen tree, Tana River Primate Reserve, Kenya

Fiona Rogers / Blue Monkey (Cercopithecus mitis) eleven month old baby in tree, Kakamega Forest Reserve, Kenya

Fiona Rogers / Blue Monkey (Cercopithecus mitis) juvenile scratching itself in tree, Kakamega Forest Reserve, Kenya

Fiona Rogers / Blue Monkey (Cercopithecus mitis) eleven month old baby in tree, Kakamega Forest Reserve, Kenya

Fiona Rogers / Blue Monkey (Cercopithecus mitis) juvenile feeding on food stored in its cheek pouches, Kakamega Forest Reserve, Kenya

Fiona Rogers / Blue Monkey (Cercopithecus mitis) sub-adult male in tree, Kakamega Forest Reserve, Kenya

Fiona Rogers / Blue Monkey (Cercopithecus mitis) eleven month old baby feeding, Kakamega Forest Reserve, Kenya

Fiona Rogers / Blue Monkey (Cercopithecus mitis) eleven month old baby feeding on bark, Kakamega Forest Reserve, Kenya