Game wardens . . . may arrest on sight and without warrant any person detected by them in the act of violating any such law; they shall have the same right as sheriffs to require aid in executing any process or in arresting without process any person found by them in the act of violating any of said laws; and they shall have authority to seize without process; and birds, fish or game then found in the possession of any such person, together with the guns, nets, seines, traps or other devices, with which the same were taken or killed, and destroy or confiscate such guns, nets, seines, traps or other devices, and forthwith convey such offender before a court or magistrate . . . .