2005 California Fish and Game Code Sections 3660 Article 1. Pheasants

3660.  It is unlawful for any person to have in his possession the
carcass, in such condition that the sex or species cannot be easily
determined, of any pheasant while in the field or forest or while
upon any highway, train, car, boat, or other conveyance when
returning from any hunting trip with gun or other hunting equipment.