Which activity is illegal in California while hunting?

Having a loaded shotgun in a vehicle on a roadway is indeed illegal in California while hunting. This rule is implemented to enhance safety and prevent accidental discharges that could endanger others on the road or the hunter themselves. California law has strict regulations regarding firearms to ensure that they are properly handled and stored, particularly in vehicles where the risk of accidents increases significantly.

While other activities may have regulations surrounding them, they don't constitute a complete prohibition like having a loaded firearm in a vehicle does. For example, hunting at night may be regulated but is not generally banned outright; it often depends on the species being hunted and local laws. Similarly, hunting from a stationary vehicle can be legal under certain circumstances, as can the use of spotlights, provided they adhere to specific guidelines. Therefore, having a loaded shotgun in a vehicle on a roadway stands out as a clear violation of California hunting laws.