Winfried Wisniewski / Griffon Vulture (Gyps fulvus) at feeding station, Extremadura, Spain

Winfried Wisniewski / Leopard (Panthera pardus) with Warthog (Phacochoerus africanus) piglet prey, Masai Mara, Kenya

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

Winfried Wisniewski / African Lion (Panthera leo) males nuzzling, 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 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 / Spotted Hyena (Crocuta crocuta) trio chasing sub-adult Cheetah (Acinonyx jubatus) off its kill, Masai Mara, Kenya

Winfried Wisniewski / Great Crested Grebe (Podiceps cristatus) parent feeding chick, Germany

Winfried Wisniewski / Great Crested Grebe (Podiceps cristatus) parent carrying chick, Germany

Winfried Wisniewski / Great Crested Grebe (Podiceps cristatus), Germany

Winfried Wisniewski / Great Crested Grebe (Podiceps cristatus) parents with chick, Germany

Winfried Wisniewski / Grey Crowned Crane (Balearica regulorum), Masai Mara, Kenya

Winfried Wisniewski / Topi (Damaliscus lunatus) mother cleaning newborn calf, Masai Mara, Kenya

Winfried Wisniewski / African Lion (Panthera leo) mother yawning with cubs, Masai Mara, Kenya

Winfried Wisniewski / African Lion (Panthera leo) mother with cubs, Masai Mara, Kenya

Winfried Wisniewski / Leopard (Panthera pardus) male, Masai Mara, Kenya

Winfried Wisniewski / Grey Crowned Crane (Balearica regulorum), Serengeti National Park, Tanzania

Winfried Wisniewski / Grey Crowned Crane (Balearica regulorum) flying, Serengeti National Park, Tanzania

Winfried Wisniewski / Grey Crowned Crane (Balearica regulorum) stretching, Serengeti National Park, Tanzania

Winfried Wisniewski / Grey Crowned Crane (Balearica regulorum), Serengeti National Park, Tanzania

Winfried Wisniewski / White Stork (Ciconia ciconia) pair building nest, Extremadura, Spain

Winfried Wisniewski / White Stork (Ciconia ciconia) landing with nest-building material, Extremadura, Spain

Winfried Wisniewski / White Stork (Ciconia ciconia) on nest, Extremadura, Spain

Winfried Wisniewski / White Stork (Ciconia ciconia) landing, Extremadura, Spain

Winfried Wisniewski / Black Kite (Milvus migrans), Castile-La Mancha, Spain

Winfried Wisniewski / Black Kite (Milvus migrans), Castile-La Mancha, Spain

Winfried Wisniewski / Black Kite (Milvus migrans), Castile-La Mancha, Spain

Winfried Wisniewski / Black Kite (Milvus migrans) flying, Castile-La Mancha, Spain

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

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

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

Winfried Wisniewski / Black-backed Jackal (Canis mesomelas) drinking at waterhole, Kgalagadi Transfrontier Park, South Africa