Cape weaver weaving.

This little bird is busy building his nest. He starts at the entrance and carry on weaving until it forms a round comfortable nest for the missus to lay the eggs in. Here some more info thanks to Wiki:

The Cape Weaver (Ploceus capensis) is a resident breeding bird species endemic to South Africa.
This common species occurs in grassland, agricultural and fynbos habitats, often near rivers. It breeds in noisy colonies in trees (often willows or Eucalyptus, rarely palms) and reedbeds.
This weaver builds a large coarsely woven nest made of grass and leaf strips with a downward facing entrance which is suspended from a branch or reed. The Cape Weaver feeds on a wide variety of seeds, grain and insects. The calls of this bird include a harsh azwit, azwit.