Although this is a medium sized bird it builds a huge nest of about 1m or more in height and near the bottom third, has a small hole for an entrance.
It gets its name from the hammer-like head.
Found throughout SA near inland rivers, streams, dams and waterways.
Mainly eats tadpoles and fish.
Clutch normally 5 eggs which hatch in 28-32 days.
Info: Robert’s Birds of Southern Africa