Suzi Eszterhas / Black-headed / Village weaver (Ploceus cucullatus) male perched near entrance to nest, Ngamba Island, Lake Victoria, Uganda

Suzi Eszterhas / Black-headed / Village weaver (Ploceus cucullatus) male perched at entrance to nest, Ngamba Island, Lake Victoria, Uganda

Suzi Eszterhas / Cattle Egret (Bubulcus ibis) sitting in Black-headed weaver (Ploceus cucullatus) nesting colony, Ngamba Island, Lake Victoria, Uganda

Suzi Eszterhas / Cattle Egret (Bubulcus ibis) predating Black-headed weaver (Ploceus cucullatus) chicks from their nests, Ngamba Island, Lake Victoria, Uganda

Suzi Eszterhas / Cattle Egret (Bubulcus ibis) in flight carrying Black-headed weaver (Ploceus cucullatus) chick, that it has taken from nest. Ngamba Island, Lake Victoria, Uganda

Tony Phelps / Cape Weaver (Ploceus capensis) perching on vegetation, Addo National Park, Eastern Cape, South Africa

Patricio Robles Gil / African masked weaver birds (Ploceus velatus} build nests on the nest of an Egyptian goose (Alopochen aegyptiacus} Kruger NP, South Africa

Patricio Robles Gil / African masked weaver birds (Ploceus velatus} build nests on the nest of an Egyptian goose (Alopochen aegyptiacus} Kruger NP, South Africa

Konrad Wothe / Speke's Weaver (Ploceus spekei) male at nest, Africa

Konrad Wothe / Village Weaver (Ploceus cucullatus) male looking out of his nest, east Africa

Chris Gomersall / Male Southern masked-weaver (Ploceus velatus) on branch, Namibia, Africa, November

Chris Gomersall / Male Southern masked-weaver (Ploceus velatus) building nest, Etosha National Park, Namibia, November

Suzi Eszterhas / Village Weaver (Ploceus cucullatus) on nest, Ngamba Island Chimpanzee Sanctuary, Lake Victoria, Uganda

Suzi Eszterhas / Village Weaver (Ploceus cucullatus), Ngamba Island Chimpanzee Sanctuary, Lake Victoria, Uganda

Richard Du Toit / Masked-Weaver (Ploceus velatus) male displaying at nest, Gauteng, South Africa

Richard Du Toit / Masked-Weaver (Ploceus velatus) nest, Gauteng, South Africa

Richard Du Toit / Masked-Weaver (Ploceus velatus) male displaying at nest, Gauteng, South Africa

Richard Du Toit / Speke's Weaver (Ploceus spekei) male in acacia, Ol Pejeta Conservancy, Kenya

Richard Du Toit / Speke's Weaver (Ploceus spekei) male perching in acacia, Ol Pejeta Conservancy, Kenya

Hanne & Jens Eriksen / Eastern golden backed weaver {Ploceus jacksoni}, male displaying at nest, UAE

Inaki Relanzon / Vitelline masked weaver (Ploceus velatus uluensis) male brings nest material to nest, female in nest, Bogoria Lake, Kenya. August

Tim Laman / Black-billed Weaver (Ploceus melanogaster) weaving a nest, Bioko Island, Equatorial Guinea, January

Edwin Giesbers / African masked-weaver (Ploceus velatus) on crockery, Queen Elizabeth National Park, Uganda, January 2009

Edwin Giesbers / African masked-weavers ( Ploceus velatus) feeding on meal scraps from table with china crockery, Queen Elizabeth National Park, Uganda, January 2009

Bruno D'Amicis / Baglafecht weaver (Ploceus baglafecht) in garden, Kaffa Zone, Southern Ethiopia, East Africa December 2008

Vincent Grafhorst / Masked-Weaver (Ploceus velatus) male calling, Mokolodi Nature Reserve, Botswana

Vincent Grafhorst / Masked-Weaver (Ploceus velatus) male, Mokolodi Nature Reserve, Botswana

Hanne & Jens Eriksen / Ruppell's weaver {Ploceus galbula} male at nest, Salalah, Oman

Jouan & Rius / African / Southern masked weaver nest (Ploceus velatus), Kgalagadi Transfrontier Park, Kalahari desert, South Africa

Jouan & Rius / African / Southern masked weaver (Ploceus velatus) at nest entrance, Kgalagadi Transfrontier Park, Kalahari desert, South Africa

Hanne & Jens Eriksen / Ruppell's weaver {Ploceus galbula} male feeding on grass seeds, Tihama, Yemen

Jabruson / Lesser masked weaver (Ploceus intermedius) nesting colony, Tsavo NP, Kenya

Mary McDonald / African masked weaver {Ploceus velatus} male at nest, Namibia

Mary McDonald / African masked weaver {Ploceus velatus} Namibia

Mike Wilkes / African masked weaver {Ploceus velatus} male at nest, Serengeti NP, Tanzania

TOM MANGELSEN / Lesser masked weaver bird {Ploceus intermedius} Serengeti NP, Tanzania

Pete Oxford / Yellow Weaver {Ploceus subaureus} constructing nest, Aecibird Sanctuary, South Africa.

Keith Scholey / Eastern Golden Backed Weaver bird. (Ploceus jacksoni) Kenya

Dietmar Nill / Village weaver {Ploceus cucullatus} male perching on branch in rain, Gambia.

Pete Oxford / Male sakalava weaver {Ploceus sakalava} at nest, Ankarana Special Reserve, Madagascar.

Nigel Bean / Baya Weaver bird building nest (Ploceus philippinus) Pakistan

Tony Heald / African masked weavers mating {Ploceus velatus} Etosha NP, Namibia

Tony Heald / African masked weaver {Ploceus velatus} male displaying to attract female, Etosha NP, Namibia

Sharon Heald / African masked weaver {Ploceus velatus} male, Etosha NP, Namibia

Mike Wilkes / Holub's golden weaver nest building {Ploceus xanthops} Samburu NP, Kenya

Mike Wilkes / Village weaver at water (Ploceus cucullatus) Gambia.

Mike Wilkes / Village weaver bird (Ploceus cucullatus) Gambia

Tony Heald / African masked weaver, female building nest {Ploceus velatus} Etosha NP, Namibia

Dave Watts / Nest of African masked weaver {Ploceus velatus} Kruger NP, S Africa

Dave Watts / African masked weaver male weaving nest {Ploceus velatus} Kruger NP, S Africa

Dave Watts / African masked weaver male weaving nest {Ploceus velatus} Kruger NP, S Africa

Dave Watts / African masked weaver male weaving nest {Ploceus velatus} Kruger NP, S Africa

Dave Watts / African masked weaver male building nest {Ploceus velatus} Kruger NP, S Africa

Dave Watts / Lesser masked weaver male building nest {Ploceus intermedius} Kruger NP, South Africa.

TOM MANGELSEN / Lesser Masked Weaver perched in tree (Ploceus intermedius) Kenya

Richard Du Toit / Holub's golden weaver {Ploceus xanthops} Caprivi strip, Namibia

Anup Shah / African masked weaver bird building nest {Ploceus velatus} Masai Mara, Kenya

Anup Shah / African masked weaver bird building nest {Ploceus velatus} Masai Mara, Kenya

Anup Shah / African masked weaver bird building nest {Ploceus velatus} Masai Mara, Kenya

Richard Du Toit / Golden Weaver (Ploceus xanthops) fighting with its own reflection in car mirror, Linyanti River, Botswana

Konrad Wothe / Lesser Masked Weaver (Ploceus intermedius) male at nest in Thorn Acacia, Serengeti, Africa

Jim Brandenburg / Lesser Masked Weaver (Ploceus intermedius) males building nests, South Africa

Jim Brandenburg / Lesser Masked Weaver (Ploceus intermedius) males building nests, South Africa

Jim Brandenburg / Lesser Masked Weaver (Ploceus intermedius) male building nest, South Africa

Jim Brandenburg / Lesser Masked Weaver (Ploceus intermedius) male building nest, South Africa

Philippe Clement / Village / Spotted backed weaver {Ploceus cucullatus} Kruger NP South Africa

Michael & Patricia Fogden / Lesser Masked Weaver (Ploceus intermedius) male displaying beneath nest, savannah, Africa

Hanne & Jens Eriksen / Ruppell's weaver male making nest {Ploceus galbula} Oman

Mike Wilkes / Village weaver bird (Ploceus cucullatus) Gambia

Anup Shah / Lesser masked weaver displaying at nest, Masai Mara, Kenya

Dietmar Nill / Village weaver (Ploceus cucullatus) male Gambia.

Anup Shah / Lesser masked weaver {Ploceus intermedius} at nest, Masai Mara, Kenya, East Africa

Juergen & Christine Sohns / Cape Weaver (Ploceus capensis) male at nest, Small Karoo, Western Cape, South Africa

Juergen & Christine Sohns / Cape Weaver (Ploceus capensis) male at nest, Small Karoo, Western Cape, South Africa

Richard Du Toit / Village Weaver (Ploceus cucullatus) group at nests on palm, Umlalazi Nature Reserve, KwaZulu-Natal, South Africa

Piotr Naskrecki / Village Weaver (Ploceus cucullatus) building nest, Gorongosa National Park, Mozambique

Juergen & Christine Sohns / Masked-Weaver (Ploceus velatus) male, Addo National Park, South Africa

Richard Du Toit / Village Weaver (Ploceus cucullatus), Itala Game Reserve, KwaZulu-Natal, South Africa

Juergen & Christine Sohns / African Golden Weaver (Ploceus subaureus) male, iSimangaliso Wetland Park, South Africa

Juergen & Christine Sohns / African Golden Weaver (Ploceus subaureus) male, iSimangaliso Wetland Park, South Africa

Juergen & Christine Sohns / African Golden Weaver (Ploceus subaureus) male, iSimangaliso Wetland Park, South Africa

Sebastian Kennerknecht / Black-necked Weaver (Ploceus nigricollis) male carrying nesting material, Kibale National Park, western Uganda

Ingo Arndt / Baya Weaver (Ploceus philippinus) woven nest material

Ingo Arndt / Baya Weaver (Ploceus philippinus) woven nest material

Ingo Arndt / Baya Weaver (Ploceus philippinus) subadult birds exercising at nest, Singapore

Ingo Arndt / Baya Weaver (Ploceus philippinus) male leaving nest, Singapore

Ingo Arndt / Baya Weaver (Ploceus philippinus) male building nest, Singapore

Ingo Arndt / Baya Weaver (Ploceus philippinus) male on unfinished nest singing, Singapore

Ingo Arndt / Baya Weaver (Ploceus philippinus) nests hanging in tree, Singapore

Ingo Arndt / Baya Weaver (Ploceus philippinus) female bird on nest, Singapore

Ingo Arndt / Baya Weaver (Ploceus philippinus) female feeding young on nest, Singapore

Ingo Arndt / Baya Weaver (Ploceus philippinus) subadult bird leaving nest, Singapore

Ingo Arndt / Baya Weaver (Ploceus philippinus) male with nest material

Ingo Arndt / Baya Weaver (Ploceus philippinus) subadult bird exercising at nest, Singapore

Martin Willis / Dark-backed Weaver (Ploceus bicolor) foraging for grubs on a dead branch, Saint Lucia, South Africa