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, more
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