Staffan Widstrand / Wild Wonders of China / Wreathed hornbill (Aceros undulatus) taking off, Tongbiguan Nature Reserve, Dehong Prefecture, Yunnan Province, China. April

Staffan Widstrand / Wild Wonders of China / Wreathed hornbill (Aceros undulatus) perched on branch, Tongbiguan Nature Reserve, Dehong Prefecture, Yunnan Province, China, April.

Staffan Widstrand / Wild Wonders of China / Wreathed hornbill (Aceros undulatus) male landing on tree outside nest hole, Tongbiguan Nature Reserve, Dehong Prefecture, Yunnan Province, China, April.

Staffan Widstrand / Wild Wonders of China / Wreathed hornbill (Aceros undulatus) feeding on berry, Tongbiguan Nature Reserve, Dehong Prefecture, Yunnan Province, China, April.

Staffan Widstrand / Wild Wonders of China / Wreathed hornbill (Aceros undulatus) landing on branch, Tongbiguan Nature Reserve, Dehong Prefecture, Yunnan Province, China, April.

Dong Lei / Wreathed hornbill (Aceros undulatus) feeding, Yingjiang County, Dehong Prefecture, Yunnan Province, China.

Thomas Marent / Wreathed Hornbill (Aceros undulatus), Manas National Park, Assam, India

Tim Fitzharris / Wreathed Hornbill (Aceros undulatus), Malaysia

Sandesh Kadur / Wreathed hornbill (Aceros undulatus) at nest hole, Pakke Tiger Reserve, Arunchal Pradesh, India

Sandesh Kadur / Wreathed hornbills (Rhyiceros undulatus) roosting in tree, Pakke, Arunachal pradesh, India

Dr. Axel Gebauer / Wreathed Hornbill (Rhyticeros undulatus), female, Itanagar, Arunachal, India, captive

Tim Fitzharris / Wreathed Hornbill (Aceros undulatus) male, Malaysia