Philippe Clement / African pygmy falcon (Polihierax semitorquatus) native to eastern and southern Africa, captive

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.

Melvin Grey / Pygmy falcon (Polihierax semitorquatus castanonotus) adult female Samburu, Kenya

Ann & Steve Toon / Pygmy falcon (Polihierax semitorquatus) female picking up grit, Kgalagadi Transfrontier Park, South Africa, January

Loic Poidevin / African pygmy falcon (Polihierax semitorquatus) on branch about to take off, Samburu, Kenya, October.

Loic Poidevin / African pygmy falcon (Polihierax semitorquatus) crouched on branch, Samburu, Kenya, October.

Loic Poidevin / African pygmy falcon (Polihierax semitorquatus) perched on branch, Samburu, Kenya, October.

Loic Poidevin / African pygmy falcon (Polihierax semitorquatus) perched on a branch looking down, Samburu, Kenya, October.

Loic Poidevin / African pygmy falcon (Polihierax semitorquatus) perched on a branch, Samburu, Kenya, October.

Loic Poidevin / African pygmy falcon (Polihierax semitorquatus) perched on a branch, Samburu, Kenya, October.

Loic Poidevin / African pygmy falcon (Poliherax semitorquatus) perched on a branch, Samburu, Kenya, October.

Christine Jung / Pygmy Falcon (Polihierax semitorquatus), Etosha National Park, Namibia

Christine Jung / Pygmy Falcon (Polihierax semitorquatus), Kgalagadi Transfrontier Park, Northern Cape, South Africa

Ann & Steve Toon / African pygmy falcon (Polihierax semitorquatus) male perched, Kgalagadi Transfrontier Park, South Africa, January

Bernard Castelein / Pygmy falcon (Polihierax semitorquatus) perched, Samburu GR, Kenya

Tony Heald / African pygmy falcon (Polihierax semitorquatus) feeding reptile prey to chick, Kalahari Gemsbok / Kgalagadi Transfrontier NP, South Africa

Richard Du Toit / African pygmy falcon (Polihierax semitorquatus) pair perched, Kalahari Gemsbok NP, South Africa

Richard Du Toit / African Pygmy Falcon (Poliherax semitorquatus) perched, Kalahari Gemsbok NP, South-Africa

Tony Heald / African pygmy falcon (Polihierax semitorquatus) perched with lizard prey, Kalahari Gemsbok / Kgalagadi Transfrontier NP, South Africa

Mary McDonald / African pygmy falcon {Polihierax semitorquatus} perched, Samburu reserve, Kenya

Richard Du Toit / African pygmy falcon (Polithierax semitorquatus) perched in Acacia tree, Kalahari Gemsbok NP, South Africa

Tony Heald / African pygmy falcon (Polihierax semitorquatus) Kalahari Gemsbok NP South Africa

Tony Heald / African pygmy falcons feed chick (Polihierax semitorquatus) Gemsbok NP South Africa

Richard Du Toit / African pygmy falcon pair (Poliherax semitorquatus) Kalahari Gemsbok NP S Africa

Tony Heald / African pygmy falcon with reptile prey (Polihierax semitorquatus) Kalahari Gemsbok

Joel Sartore / Photo Ark / African pygmy falcon (Polihierax semitorquatus) male portrait of head, ABQ BioPark. Captive.

Ann & Steve Toon / Pair of Pygmy falcons (Polihierax semitorquatus), male on left, female on right, perched in treetop, Kgalagadi Transfrontier Park, South Africa.

Nick Garbutt / Pygmy falcon (Polihierax semitorquatus) male perched in Acacia bush. Serengeti National Park, Tanzania.

Philippe Clement / African pygmy falcon (Polihierax semitorquatus) female perched in tree, native to eastern and southern Africa. Captive. Digital composite