KOOISTRA H (1985) Short contributions: Common Gulls Lams canus breeding on buildings. LIMOSA 58 (2): 73-73.

Common Gull Larus canus canus In de dunes near Petten (Noord-Holland) several pairs of Common Gulls out of over 200 pairs nesting in the area breed on buildings (first case in 1975 after they had bred on crates there).

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