Steve Knell / Blue tit (Parus caeruleus), perched on a mossy twig. Gloucestershire, UK, February

Guy Edwardes / Grey-breasted Spurfowl (Pternistis rufopictus) calling, Serengeti National Park, Tanzania, Africa February

Elio Della Ferrera / Chestnut naped francolin {Pternistis castaneicollis} Ethiopian highlands, Ethiopia

Enrique Lopez-Tapia / Yellow-necked Spurfowl (Francolinus leucoscepus), female. Kenya.

Ernie Janes / Red-billed spurfowl (Pternistis adspersus) Etosha National Park, Namibia

Sean Viljoen / Red-billed francolin (Pternistis adspersus) calling, Moremi Game Reserve, Botswana.

Sean Viljoen / Red-billed francolin (Pternistis adspersus) with chicks, Moremi Game Reserve, Botswana.

Denis-Huot / Red-billed francolin (Pternistis adspersus) standing in the rain, Masai-Mara Game Reserve, Kenya. March.

Tony Heald / Redbilled francolin (Francolinus adspersus) at sunrise, Chobe National Park, Botswana.

Nate Chappell/ BIA / Red-billed Spurfowl (Pternistis adspersus), Chobe National Park, Botswana

Nate Chappell/ BIA / Red-billed Spurfowl (Pternistis adspersus), Chobe National Park, Botswana

Nate Chappell/ BIA / Cape Spurfowl (Pternistis capensis), Western Cape, South Africa

Constantinos Petrinos / Red-necked spurfowl (Pternistis afer) eating a seed. Masai Mara National Reserve, Rift Valley Province, Kenya, East Africa, August.

Neil Aldridge / Red-billed spurfowl / Red-billed francolin (Pternistis adspersus) standing on the top of a termite mound in early morning, Chobe National Park, Botswana.

Neil Aldridge / Natal francolin / Natal spurfowl (Pternistis natalensis) perched on a dead branch, Letaba River, Kruger National Park, South Africa.

Neil Aldridge / Red-billed spurfowl / Red-billed francolin (Pternistis adspersus) perching on a branch in early morning, Chobe National Park, Botswana.

Neil Aldridge / Natal francolin (Pternistis natalensis) digging in bare earth, Kruger National Park, South Africa.

Neil Aldridge / Swainson's spurfowl (Pternistis swainsonii) standing alert, while a juvenile takes a dust bath, Chobe River, Chobe National Park, Botswana.

Ashish & Shanthi Chandola / Natal spurfowl (Pternistis natalensis), Kruger National Park, South Africa, July.

Ashish & Shanthi Chandola / Swainson's spurfowl (Pternistis swainsonii) Kruger National Park, South Africa, July.

Ashish & Shanthi Chandola / Swainson's spurfowl (Pternistis swainsonii) Kruger National Park, South Africa, July.

Michael Hutchinson / Cape francolin (Pternistis capensis), De Hoop Nature Reserve, South Africa, December.

Michael Hutchinson / Cape francolin (Pternistis capensis) sitting on fence, De Hoop Nature Reserve, South Africa, December.

Loic Poidevin / Yellow necked spurfowl (Pternistis leucoscepus) on a rock, Masai Mara, Kenya, October.

Loic Poidevin / Yellow necked spurfowl (Pternistis leucoscepus) standing on rock, Masai Mara, Kenya, October.

Loic Poidevin / Yellow necked spurfowl (Pternistis leucoscepus) portrait, Masai Mara, Kenya, October.

Loic Poidevin / Four Yellow necked spurfowl (Pternistis leucoscepus) on Acacia, Masai Mara, Kenya, October.

Loic Poidevin / Yellow necked spurfowl (pternistis leucoscepus) standing on a branch calling, Masai Mara, Kenya, October.

Loic Poidevin / Yellow necked spurfowl (Pternistis leucoscepus) walking, Masai Mara, Kenya, October.

Loic Poidevin / Red-necked spurfowl (Francolinus / Pternistis afer) Masai Mara, Kenya, October.

Loic Poidevin / Red-necked spurfowl (Francolinus / Pternistis afer) walking, Masai Mara, Kenya, October.

Will Burrard-Lucas / Chestnut-naped Francolin (Pternistis castaneicollis), Bale Mountains National Park, Ethiopia.

Eric Baccega / Yellow necked spurfowl (Francolinus leucoscepus) Samburu National Park, Kenya, Africa.

Christine Jung / Red-billed Spurfowl (Pternistis adspersus), Etosha Nationalpark, Oshikoto, Namibia

David Williams / Yellow-necked Spurfowl (Pternistis leucoscepus), Tsavo East National Park, Kenya

Jiri Slama / Red-billed Spurfowl (Pternistis adspersus), Namibia

Denis-Huot / Yellow-necked Spurfowl (Francolinus leucoscepus) portrait, Masai-Mara Game Reserve, Kenya

Denis-Huot / Red-billed francolin (Francolinus adspersus) Moremi Game Reserve, Botswana

Denis-Huot / Francolin (Francolinus leucoscepus) in rain, profile, Masai-Mara Game Reserve, Kenya

Laurent Geslin / Red billed francolin portrait {Pternistis adspersus} Caprivi strip, Namibia.

Kevin Schafer / Cape Spurfowl (Pternistis capensis), Cape Peninsula, South Africa

Martin Willis / Cape Spurfowl (Pternistis capensis) foraging, Kirstenbosch Garden, Cape Town, South Africa

Christophe Courteau / Red-Billed Francolin standing on termite mound (Francolinus / Pternistes adspersus) Okavango Delta, Botswana

Charlie Summers / Grey breasted francolin (Pternistis rufopictus) atop a log, Serengeti National Park, Tanzania

Richard Du Toit / Cape francolin (Pternistis capensis), Western Cape, South Africa, August

Sergey Gorshkov / Red billed francolin (Pternistis adspersus) on rock, Okavango Delta, Botswana, April

Tui De Roy / Yellow-necked Spurfowl (Pternistis leucoscepus) pair, Ol Pejeta Conservancy, Kenya

Tui De Roy / Yellow-necked Spurfowl (Pternistis leucoscepus), Laikipia Wildlife Conservancy, Kenya

Tui De Roy / Yellow-necked Spurfowl (Pternistis leucoscepus) calling, Lewa Wildlife Conservation Area, Kenya

Guy Edwardes / Grey-breasted Spurfowl (Pternistis rufopictus) standing on dead branch, Serengeti National Park, Tanzania, Africa, February

Guy Edwardes / Grey-breasted Spurfowl (Pternistis rufopictus) head portrait, calling, Serengeti National Park, Tanzania, Africa, February

Tui De Roy / Yellow-necked Spurfowl (Pternistis leucoscepus), Lewa Wildlife Conservancy, Laikipia, Kenya

Nick Garbutt / Grey-breasted Spurfowl (Pternistis rufopictus) with head tilted back, calling / displaying. Seronera Valley, Serenegeti National Park, Tanzania. March.

Nick Garbutt / Grey-breasted Spurfowl (Pternistis rufopictus) calling / displaying. Seronera Valley, Serenegeti National Park, Tanzania. March.

Tony Heald / Red-billed francolin (Pternistis adspersus) with chick, Chobe National Park, Botswana May 2008

Nick Garbutt / Yellow-necked Spurfowl {Pternistis leucoscepus} calling, Samburu game reserve, Kenya.

Richard Du Toit / Yellow-necked Spurfowl (Pternistis leucoscepus) calling, Likipia, Kenya

Tony Phelps / Cape francolin {Francolinus / Pternistis capensis} DeHoop NR, Western Cape, South Africa

Rolf Nussbaumer / Erckel's Francolin (Pternistis erckelii) Waimea Canyon, Kauai, Hawaii, USA. August 1997

Tony Heald / Yellow necked spurfowl {Pternistis leucoscepus} dusing, Laikipia, Kenya

Tony Heald / Yellow necked spurfowl {Francolinus / Pternistis leucoscepus} Laikipia, Kenya.

Staffan Widstrand / Yellow-necked spurfowl {Pternistis leucoscepus} Tsavo NP, Kenya

Mike Wilkes / Grey breasted spurfowl calling {Francolinus / Pternistis rufopictus} Tanzania

Richard Du Toit / Red billed francolin {Pternistis adspersus} on termite mound. Botswana Moremi W

Richard Du Toit / Cape francolin {Pternistis capensis} Hermanus, South Africa

Richard Du Toit / Red billed francolin {Pternistis adspersus} Moremi WR Botswana

Anup Shah / Yellow necked spurfowl (Pternistis leucoscepus), Samburu NR, Kenya

Hermann Brehm / Yellow necked spurfowl, Tarangire NP, Tanzania

Bernard Castelein / Yellow necked spurfowl, Samburu, Kenya

Anup Shah / Grey breasted spurfowl {Pternistis rufopictus} Serengeti NP, Tanzania

Winfried Wisniewski / Yellow-necked Spurfowl (Pternistis leucoscepus), Tsavo East National Park, Kenya

Winfried Wisniewski / Yellow-necked Spurfowl (Pternistis leucoscepus), Tsavo East National Park, Kenya

Nate Chappell/ BIA / Red-billed Spurfowl (Pternistis adspersus) dust bathing, Waterberg National Park, Namibia

Ingo Waschkies/ BIA / Yellow-necked Spurfowl (Pternistis leucoscepus), Samburu, Kenya

Mike Read / Natal francolin {Francolinus / Pternistis natalensis} Kruger National Park, South Africa

Mike Read / Natal francolin {Francolinus / Pternistis natalensis} Kruger National Park, South Africa

Mike Read / Natal francolin {Francolinus / Pternistis natalensis} Kruger National Park, South Africa

Mike Read / Natal francolin {Francolinus / Pternistis natalensis} Kruger National Park, South Africa

Kim Taylor / Red-billed francolin (Pternistis adspersus) male displaying, Namibia, Africa

Kim Taylor / Red-billed francolin (Pternistis adspersus) male displaying, Namibia, Africa

Kim Taylor / Red-billed francolin (Pternistis adspersus) on stump of wood, Namibia, Africa

Joel Sartore / Photo Ark / Double-spurred francolin (Pternistis bicalcaratus bicalcaratus) male, portrait, Management of Nature Conservation, UAE. Captive, occurs in West Africa.

Joel Sartore / Photo Ark / Double-spurred francolin (Pternistis bicalcaratus bicalcaratus) male, portrait, Management of Nature Conservation, UAE. Captive, occurs in West Africa.

Joel Sartore / Photo Ark / Red-necked francolin (Pternistis afer castaneiventer) male, head portrait, Management of Nature Conservation, UAE. Captive, occurs in South Africa.

Joel Sartore / Photo Ark / Red-necked francolin (Pternistis afer castaneiventer) pair, portrait, Management of Nature Conservation, UAE. Captive, occurs in South Africa.

Joel Sartore / Photo Ark / Red-necked francolin (Pternistis afer castaneiventer) male, portrait, Management of Nature Conservation, UAE. Captive, occurs in South Africa.

Joel Sartore / Photo Ark / Double-spurred francolin (Pternistis bicalcaratus bicalcaratus) female, portrait, Management of Nature Conservation, UAE. Captive, occurs in West Africa.

Richard Flack / Hildebrandt's spurfowl (Pternistis hildebrandti) walking on grass, calling, El Karama Wilderness Conservancy, northern Kenya.

Roland Seitre / Erckel's francolin (Francolinus erckelii) portrait, Ethiopia. Captive.

Neil Aldridge / Red-billed spurfowl (Pternistis adspersus) preening before jumping off the fallen tree and out of frame, Okavango Delta, Botswana.

Roland Seitre / Erckel's francolin (Francolinus erckelii) standing on ground in long grass, Mauna Kea State recreation area, Big Island, Hawaii.

Guy Edwardes / Red-billed francolin (Pternistis adspersus) perched on tree snag. Savuti, Chobe National Park, Botswana.

Guy Edwardes / Red-billed francolin (Pternistis adspersus) perched on tree snag. Savuti, Chobe National Park, Botswana.

Guy Edwardes / Red-billed francolin (Pternistis adspersus) calling, perched on tree snag. Savuti, Chobe National Park, Botswana.

Guy Edwardes / Red-billed francolin (Pternistis adspersus) perched on tree snag. Savuti, Chobe National Park, Botswana.

Guy Edwardes / Red-billed francolin (Pternistis adspersus) perched on tree snag. Savuti, Chobe National Park, Botswana.

Guy Edwardes / Swainson's spurfowl (Pternistis swainsoni) calling. Savuti, Chobe National Park, Botswana.