Paul Souders/ Worldfoto / Black Heron (Egretta ardesiaca) canopy hunting, Chobe River, Chobe National Park, Botswana

Nick Garbutt / Parson's chameleon (Calumma parsonii), male hunting in forest canopy. Mitsinjo Forest, Andasibe-Mantadia National Park, eastern Madagascar.

Ammonite / Sri Lankan leopard (Panthera pardus kotiya) hunting and climbing along thin branches, footage taken at night using starlight camera technology, Yala National Park, Sri Lanka.

Nick Garbutt / Orcas or Killer Whales (Orcinus orca) hunting near the shore. Mathieson Channel, near Mussel Inlet, Great Bear Rainforest, British Columbia, Canada, October.

Lou Coetzer / Black heron (Egretta ardesiaca) using wing canopy to create shadow for hunting, Chobe River, Botswana, March.

Lou Coetzer / Black heron (Egretta ardesiaca) using wing canopy to produce shade for hunting, Chobe River, Botswana, April.

Lou Coetzer / Black heron (Egretta ardesiaca) using wing canopy to create shade for hunting fish, Chobe River, Botswana, April.

Pete Oxford / Huaorani man aiming a blowgun up into the canopy to hunt primates. The body of a night monkey (Aotus) is carried on his hip. Gabaro community, Yasuni National Park, Ecuador, June 2007. Model release #...

Pete Oxford / Huaorani man aiming a blowgun up into the canopy to hunt primates. The body of a night monkey (Aotus) is carried on his hip. Gabaro community, Yasuni National Park, Ecuador, June 2007. Model release #...

Pete Oxford / Huaorani man aiming a blowgun up into the canopy to hunt primates. The body of a night monkey (Aotus) is carried on his hip. Gabaro community, Yasuni National Park, Ecuador, June 2007. Model release #...

Pete Oxford / Huaorani Indian hunters looking up into the canopy. The man on the left has a howler monkey and a coati. Gabaro Community, Yasuni National Park, Ecuador, June 2007. Model release #GA07 and #GA22.

Pete Oxford / Huaorani Indian climbing tree with blow gun / dart propped against tree, Ecuadorian Amazon, South America.