A particularly large social weaver bird nest growing in a dead acacia tree, NamibRand, Namib Desert, Namibia, Africa

A particularly large social weaver bird nest growing in a dead acacia tree, NamibRand, Namib Desert, Namibia, Africa

Researchers measuring a female Leatherback turtle (Dermochelys coriacea) at its nest site, Shell Beach, Guyana, South America

Turtle warden with nesting Leatherback turtle (Dermochelys coriacea), Shell Beach, Guyana, South America

Applying a tag to a Leatherback turtle (Dermochelys coriacea) at its nesting site, Shell Beach, Guyana, South America

A titan triggerfish aggressively defends it's nest of eggs in the sand.

Yellow-footed gull (Larus livens), on its nest on Isla Coronado, Baja California Sur, Sea of Cortez, Mexico, North America

Multi-storey birdhouse towers, selective focus, India, Asia

Termite nest on a palm tree at Lake Sandoval,Peruvian Rainforest, South America

Termite mound at Simpson's Gap, West Madonnell Mountain Range, Australia