Heini Wehrle / Red-billed Oxpecker (Buphagus erythrorhynchus) pair searching for parasites on Impala, Mpumalanga, South Africa

Heini Wehrle / Helmeted Guineafowl (Numida meleagris) with chicks, Mpumalanga, South Africa

Heini Wehrle / Bateleur Eagle (Terathopius ecaudatus) female in defensive posture, Northern Cape, South Africa

Heini Wehrle / Dideric Cuckoo (Chrysococcyx caprius), Mpumalanga, South Africa

Heini Wehrle / Dideric Cuckoo (Chrysococcyx caprius), Mpumalanga, South Africa

Heini Wehrle / Ostrich (Struthio camelus) chicks, Hwange National Park, Zimbabwe

Heini Wehrle / Pale Chanting-Goshawk (Melierax canorus) juvenile calling, Northern Cape, South Africa

Heini Wehrle / Pale Chanting-Goshawk (Melierax canorus) juvenile, Northern Cape, South Africa

Heini Wehrle / Cape Eagle-Owl (Bubo capensis), Mpumalanga, South Africa

Heini Wehrle / Cape Eagle-Owl (Bubo capensis), Mpumalanga, South Africa

Heini Wehrle / Red-headed Finch (Amadina erythrocephala) male, Northern Cape, South Africa

Heini Wehrle / Kalahari Scrub-Robin (Cercotrichas paena), Northern Cape, South Africa

Heini Wehrle / Red-billed Quelea (Quelea quelea), Northern Cape, South Africa

Andy Trowbridge / Photographer Heini Wehrle working on the Valldola River near Gudbrandsjuvet, Gudbrandsjuvet, Norway. September. Model released.

Heini Wehrle/ BIA / Cape Sugarbird (Promerops cafer), Western Cape, South Africa

Heini Wehrle/ BIA / Ground Hornbill (Bucorvus leadbeateri) with insect prey, Mpumalanga, South Africa

Heini Wehrle/ BIA / Eurasian Eagle-Owl (Bubo bubo), Schwyz, Switzerland

Heini Wehrle / Red-headed Finch (Amadina erythrocephala) males, Northern Cape, South Africa