| Gulls and Fulmars following ships and feeding on discards at night |  |
| Garthe, S.; Hüppop, O. (1993). Gulls and Fulmars following ships and feeding on discards at night Ornis Svec. 3: 159-161 |
| In: Ornis Svecica. Swedish Ornithological Society: Stockholm. ISSN 1102-6812, meer |
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