Anup Shah / Western lowland gorilla (Gorilla gorilla gorilla) sub-adult female 'Mosoko' aged 8 years crossing a river, Bai Hokou, Dzanga Sangha Special Dense Forest Reserve, Central African Republic

Gerry Ellis / Western Lowland Gorilla (Gorilla gorilla gorilla) silverback, Limbe Wildlife Centre, Cameroon

Richard Du Toit / Greater Double-collared Sunbird (Nectarinia afra) male on Pincushion (Leucospermum sp) flower, Western Cape, South Africa

Pedro Narra / Black erget (Egretta gularis) displaying, Joao Vieira Poillo , Bijagos Archipellago. Guinea Bissau

Brian Bevan / Male Jackson's chameleon (Trioceros jacksonii) on a branch, looking around with turret eyes, UK. Captive, native to East Africa.

Tony Phelps / Cape cobra (Naja nivea) spreading its hood, retreats into hole, De Hoop Nature Reserve, Western Cape, South Africa, January.

Tony Phelps / Cape cobra (Naja nivea) emerging from a Cape gerbil (Gerbilliscus afra) burrow, hunting and smelling with its tongue, De Hoop Nature Reserve, Western Cape, South Africa, January.

Tony Phelps / Cape cobra (Naja nivea) hunting, chasing a Cape gerbil (Gerbilliscus afra), De Hoop Nature Reserve, Western Cape, South Africa, December.

Tony Phelps / Puff adder (Bitis arietans) moving into ambush position under a bush, DeHoop Nature Reserve, Western Cape, South Africa, January.

Tony Phelps / Chacma baboon (Papio ursinus) troop exiting den, DeHoop Nature Reserve, Western Cape, South Africa, June.

Ingo Arndt / Weaver bird nest (Ploceus sp.) detail from Africa in collection at Uebersee-Museum, Bremen, Germany.

Ann & Steve Toon / Ostrich (Struthio camelus) male standing in landscape, Table Mountain National Park, Western Cape, South Africa