In this subchapter:
(1) "Migratory game bird" means any bird listed in Section 64.021 and includes any other species of migratory bird that the commission by rule designates as a migratory game bird.
(2) "Upland game bird" means any bird listed in Section 64.001, other than a bird that is also listed in Section 64.021, and includes any other species of upland game bird that the commission by rule designates as an upland game bird.