29 Ring-billed Gulls were used in more than one homing trial to test the role of experience in orientation behavior. Previous travel over a particular route did not greatly influence homing success rates but there was an indication that habituation to the experimental process might result in improved performance. Ring-billed gulls ranging between 2 and 12 years old were used in 27 homing trials. The success rate for older gulls was not significantly better than that for younger birds although their average return speed was slightly faster. Gulls released in groups of 2 to 10 did not show increased homing success. Members of such groups usually responded individually at release time. The homing performance of 73 females and 52 males was compared. Return rates were similar with 76.7% of the females and 80.8% of the males being successful. The average speeds were also similar for the two groups.