The Plaintive Cuckoo is quite a fascinating bird. For one it could continue it's 3 syllable high pitch call almost non-stop and for hours on end. Fortunately it is a more pleasant call to the ear if compared with the 'almost shreakish' call of the Asian Koel. :-)
It's habitat are broad leaved evergreen forest up to 750 meters. Here are photos of an adult Male and a Juvenile. Could only get pics of the 'unnatural' fence as they were foraging and using the fence as their vantage point.
An adult Male