Ala. Code § 9-11-432

A person may not hunt migratory waterfowl within the State of Alabama or its coastal waters without first procuring a state migratory waterfowl stamp. The stamp shall be validated by the signature of the hunter written across the face of the stamp in ink. The stamp shall be in the possession of the hunter while the hunter is hunting or taking migratory waterfowl. The form of the stamp shall be determined by the department and the department shall furnish the stamps to the judge of probate or issuing officer of the counties or to other authorized license agents as provided in Section 9-11-433 for issuance or sale in the same manner as state hunting licenses are issued or sold.