Hougaard Malan / Quiver tree with sociable weaver (Philetairus socius) nest in morning light. Quiver Tree Forest, Keetmanshoop, Namibia. March 2011.

Richard Du Toit / Sociable Weaver (Philetairus socius) nest, Kgalagadi Transfrontier Park, South Africa

Ann & Steve Toon / Sociable weaver (Philetairus socius) nest on telegraph pole, Northern Cape, South Africa.

Ann & Steve Toon / Sociable weaver (Philetairus socius) nest in quiver tree (Aloidendron dichotomum) Quiver tree forest, Keetmanshoop, Namibia.

Lucas Bustamante / Sociable weaver (Philetairus socius) looking out of nest hole, Etosha National Park, Harare Province, Namibia.

Gerald Haas/ BIA / Sociable Weaver (Philetairus socius) nests on pole, Etosha National Park, Namibia

Gerald Haas/ BIA / Sociable Weaver (Philetairus socius) nests in tree, Kalahari Desert, Namibia

Ingo Arndt / Peach-faced Lovebird (Agapornis roseicollis) breeding in communal nest of sociable weavers (Philetairus socius) in quiver tree (Aloe dichotoma), Namibia.

Ingo Arndt / Peach-faced Lovebird (Agapornis roseicollis) breeding in communal nest of Sociable weavers (Philetairus socius) in Quiver tree (Aloe dichotoma), Namibia.

Francois Savigny / Cape cobra (Naja nivea) raiding Sociable weaver's nest (Philetairus socius) Kalahari Gemsbok, South Africa

Jen Guyton / Nest of sociable weavers (Philetairus socius) hangs from a thorn tree in the Namib Desert, Namibia. February 2015

Jen Guyton / Nest of sociable weavers (Philetairus socius) hangs from a thorn tree in the Namib Desert, Namibia.