| Citation | Watanuki, Y., 1989 Sex and individual variations in the diet of Slaty-backed Gulls breeding on Teuri Island, Hokkaido. Japanese Journal of Ornithology 38:1-13. |
| Ref. | 5605 Watanuki, Y., 1989 |
| Page | |
| Named Used as Valid | Larus schistisagus |
| Locality | |
| Distribution | Japan. |