English: The Coppersmith Barbet's (Megalaima haemacephala) metronomic call has been likened to a coppersmith striking metal with a hammer. It can be heard from afar but difficult to locate.

On this occasion I was fortunate to have a clear view of the bird in an African Tulip Tree. It was making the animated calls in response to another one, possibly its mate a short distance away in another African Tulip tree. I had earlier heard but unable to locate it when I walked past that tree earlier.

In this video, many other bird calls can be heard, they are: Javan Mynas, Asian Glossy Starlings, Collared Kingfisher, Black-naped Orioles, Hill Myna, and Greater Racket-tailed Drongo in its repetitive metallic clinks.

(description also fom source)