The can’s reputation as the finest tasting of ducks rests on its fondness for eating wild celery, but they feed on a variety of aquatic plants. Chesapeake Bay and the Upper Mississippi River are steeped in canvasback hunting tradition, but hunters in Louisiana, Texas, and California shoot more birds. As with most diver hunting, a big spread on open water pulls in cans. Most hunters rig 100-plus decoys on longlines, and many rig drakes only, as their white bodies are more visible. Some Midwesterners increase visibility further by adding a pair of trumpeter swan decoys.