
Photo: Mike Gordon — wildlifeofeverywhere.com
Rhinoplax vigil
Range
Malay Peninsula, Sumatra, Borneo, Thailand and Myanmar
Weight
About 3kg
The helmeted hornbill is a very large hornbill found on the Malay Peninsula, Sumatra, Borneo, Thailand and Myanmar. The casque accounts for some 11% of its roughly 3 kg weight. Unlike any other hornbill, the casque is almost solid and is used in head-to-head combat among males (Wikipedia, general species account).