| Citation | Watanuki, Y., 1988 Regional difference in the diet of Slaty-backed Gulls breeding around Hokkaido. Journal of the Yamashina Institute of Ornithology 20:71-81. |
| ссылка | 5579 Watanuki, Y., 1988 |
| Page | |
| Named Used as Valid | Larus schistisagus |
| Местонахождение | |
| Distribution | Japan. |