Karst Peaks of Guilin, China, behind a traditional cormorant fisherman
Using cormorant to fish is an ancient practice in Japan and China. In Japan, cormorant fishermen puts a tethered steel ring around the bird’s neck (to prevent them from swallowing the fish). One fisherman usually handles ten to twelve birds at a time.
In China, the cormorants are more like beloved pets to the fisherman – he would train the bird to catch the fish and release it to him instead of swallowing it.
Now it's done mostly for tourism.
Maybe we have a use for cormorant's after all.