David Pattyn / Zanzibar red colobus monkey (Procolobus kirkii) crossing the main road through the Reserve, Jozani forest, Jozani Chwaka Bay NP, Zanzibar, Tanzania, August.

David Pattyn / Zanzibar red colobus monkey (Procolobus kirkii) portrait in a tree, Jozani forest, Jozani Chwaka Bay NP, Zanzibar, Tanzania, August

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) head portrait, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) jumping through the air, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) relaxing on tree branch, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) juvenile, sitting in tree calling, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) mother with offspring, sitting in tree, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Bernard Castelein / Zanzibar Red Colobus (Procolobus kirkii) head portrait of infact, sitting with mother, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Bernard Castelein / Bearded Dwarf Chameleon (Rhampholeon brevicaudatus) crawling over leaf litter, Jozani Chwaka Bay NP, Zanzibar, Tanzania

Martin Grimm/ BIA / Zanzibar Red Colobus (Procolobus kirkii) calling, Jozani Chwaka Bay National Park, Zanzibar, Tanzania

Anup Shah / Zanzibar red colobus (Procolobus kirkii) feeding. Jozani-Chwaka Bay National Park, Zanzibar, Tanzania. June.

Anup Shah / Zanzibar red colobus (Procolobus kirkii) group feeding on charcoal. Jozani-Chwaka Bay National Park, Zanzibar, Tanzania. May.