Winfried Wisniewski / African Lion (Panthera leo) male, Masai Mara, Kenya

Winfried Wisniewski / Hippopotamus (Hippopotamus amphibius) in territorial display, Mkhuze Game Reserve, KwaZulu-Natal, South Africa

Winfried Wisniewski / Tawny Eagle (Aquila rapax) flying, KwaZulu-Natal, South Africa

Winfried Wisniewski / Warthog (Phacochoerus africanus) drinking at waterhole, KwaZulu-Natal, South Africa

Winfried Wisniewski / Cape Buffalo (Syncerus caffer) drinking at waterhole at night, KwaZulu-Natal, South Africa

Winfried Wisniewski / Ruff (Philomachus pugnax) males displaying in rain at lek, Norway

Winfried Wisniewski / Ruff (Philomachus pugnax) male displaying at lek, Varanger Peninsula, Norway

Winfried Wisniewski / Brown Bear (Ursus arctos) running through snow, Finland

Winfried Wisniewski / African Skimmer (Rynchops flavirostris) skimming, Chobe River National Park, Botswana

Winfried Wisniewski / African Skimmer (Rynchops flavirostris) pair fighting in flight, Chobe River National Park, Botswana

Winfried Wisniewski / African Skimmer (Rynchops flavirostris) pair fighting in flight, Chobe River National Park, Botswana

Winfried Wisniewski / Burchell's Zebra (Equus burchellii), Masai Mara, Kenya

Winfried Wisniewski / Burchell's Zebra (Equus burchellii), Masai Mara, Kenya

Winfried Wisniewski / Masai Giraffe (Giraffa tippelskirchi) males fighting, Masai Mara, Kenya

Winfried Wisniewski / African Elephant (Loxodonta africana) males sparring, Chobe National Park, Botswana

Winfried Wisniewski / African Elephant (Loxodonta africana) and tourist boat, Chobe River, Chobe National Park, Botswana

Winfried Wisniewski / Brown Pelican (Pelecanus occidentalis) landing, San Diego, California

Winfried Wisniewski / African Fish Eagle (Haliaeetus vocifer) striking at fish, Chobe National Park, Botswana

Winfried Wisniewski / Sandhill Crane (Grus canadensis) pair flying, Bosque del Apache National Wildlife Refuge, New Mexico

Winfried Wisniewski / Great White Pelican (Pelecanus onocrotalus), Lake Nakuru, Lake Nakuru National Park, Kenya

Winfried Wisniewski / Great Egret (Casmerodius albus) landing on water, Florida

Winfried Wisniewski / African Lion (Panthera leo) male, Masai Mara National Reserve, Kenya

Winfried Wisniewski / Lesser Flamingo (Phoenicopterus minor) pair flying, Lake Nakuru National Park, Kenya

Winfried Wisniewski / African Lion (Panthera leo) male, Masai Mara National Reserve, Kenya

Winfried Wisniewski / Black Rhinoceros (Diceros bicornis) running, Tsavo East National Park, Kenya

Winfried Wisniewski / Cheetah (Acinonyx jubatus) mother with five cubs on a termite mound, Masai Mara National Reserve, Kenya

Winfried Wisniewski / African Lion (Panthera leo) male, Masai Mara National Reserve, Kenya

Winfried Wisniewski / African Lion (Panthera leo) females playing, Masai Mara National Reserve, Kenya

Winfried Wisniewski / Cheetah (Acinonyx jubatus) pouncing, Africa

Winfried Wisniewski / Cheetah (Acinonyx jubatus) pouncing, Africa

Winfried Wisniewski / Snowy Owl (Nyctea scandiaca) flying, Alaska

Winfried Wisniewski / Leopard (Panthera pardus) walking across bare ground, Africa

Winfried Wisniewski / Blue Wildebeest (Connochaetes taurinus) migrating herd crossing river, Africa

Winfried Wisniewski / African Elephant (Loxodonta africana) mother with calf, Africa

Winfried Wisniewski / African Elephant (Loxodonta africana) mother with calf drinking, Africa

Winfried Wisniewski / Common Crane (Grus grus) portrait, Europe

Winfried Wisniewski / Cheetah (Acinonyx jubatus) close up of face showing 'tear mark' pattern, Africa

Winfried Wisniewski / African Lion (Panthera leo) two males resting, Africa

Winfried Wisniewski / African Lion (Panthera leo) female, Africa

Winfried Wisniewski / African Lion (Panthera leo), African Lioness carrying cub, Masai Mara National Reserve, Kenya

Winfried Wisniewski / African Lion (Panthera leo) males nuzzling, Masai Mara, Kenya

Winfried Wisniewski / African Lion (Panthera leo) male at sunrise, Masai Mara, Kenya

Winfried Wisniewski / African Lion (Panthera leo) male in savanna, Masai Mara, Kenya

Winfried Wisniewski / Bearded Vulture (Gypaetus barbatus) flying, Giant's Castle National Park, KwaZulu-Natal, South Africa

Winfried Wisniewski / Burchell's Sandgrouse (Pterocles burchelli) in waterhole, Kgalagadi Transfrontier Park, South Africa

Winfried Wisniewski / Lanner Falcon (Falco biarmicus) flying, Kgalagadi Transfrontier Park, South Africa

Winfried Wisniewski / Oryx (Oryx gazella) males fighting, Kgalagadi Transfrontier Park, South Africa

Winfried Wisniewski / Blue Wildebeest (Connochaetes taurinus) herd crossing river during migration, Mara River, Masai Mara, Kenya