The fishing technique uses specially trained cormorants. To control the birds, the fishermen tie a snare near the base of the bird’s throat. This prevents the birds from swallowing larger fish, which are held in their throat. When a cormorant has caught a fish in its throat, the fisherman brings the bird back to the boat and has the bird spit the fish up. The fishermen usually award one or two small fish to encourage them. The birds can also swallow every smaller fish they catch.