Bird nests in a tree in the Golden Gate Highlands National Park in the Orange Free State, South Africa

Bird nests in a tree  in the Golden Gate Highlands National Park in the Orange Free State, South Africa in February 2015

Ant nest

Green ant nest in Darwin, Northern Territory, photographed in April 2009. If you enlarge the picture by clicking on it you can see a green ant on the branch to the right of the nest.