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Article
Marta Dimitrova, Auteur ; Mattia Brambilla, Auteur ; Boris P. Nikolov, AuteurSombre Tit (Poecile lugubris) is one of the least studied passerine bird species in Europe, and the least known among Paridae species on the continent. The aim of the study is to identify its habitat preferences in a karst environment. The study[...]
Article
Boris P. Nikolov, Auteur ; Nikolay D. Kodzabashev, Auteur ; Vassil V. Popov, Auteur
Article
Boris P. Nikolov, AuteurThe diet of the Red-backed Shrike Lanius collurio was studied from pellets and food remains collected beneath perches, as well as from food samples obtained from nestlings, using neck collars, during the breeding season (May - July), in 1995 - 1[...]
Article
Boris P. Nikolov, Auteur ; Iva P. Hristova, AuteurThis study, conducted in the region of Sofia (western Bulgaria), investigated activity patterns of juvenile Woodchat Shrikes Lanius senator after fledging. Time spent to flying, social interactions, ground hunting and solitarily behaviour increa[...]
