An unusual nesting of the Black-headed Gull in Kaliningrad. - E.L. Lykov. - Berkut. 16 (1). 2007. - P. 161-162.
A nest of the Black-headed Gull was registered in bush of Sambucus nigra in Kaliningrad city. Measurements of the nest and eggs are given. Similar cases described in published sources are presented. [Russian].
Key words: Black-headed Gull, Larus ridibundus, breeding, nest, egg.
Address: E.L. Lykov, dep. of vertebrate zoology, biological faculty, Moscow university, Leninskiye gory, 1/12, 119992 Moscow, Russia.