Extraordinary occurrence of Pallas’s leaf warbler (Phylloscopus proregulus Pallas, 1811) in Bulgaria and the Balkan Peninsula in the autumn and winter of 2022/2023

Peter Shurulinkov; Patrick Bergkamp; Nikola Aleksandrov; Ivaylo Tonev; Rosena Tomova; Pavel Simeonov; Biliana Konakchieva; Stela-Teodora Trendafilova; Boris Hotinov

Peter Shurulinkov https://orcid.org/0000-0002-6586-8690; Patrick Bergkamp; Nikola Aleksandrov; Ivaylo Tonev; Rosena Tomova; Pavel Simeonov; Biliana Konakchieva; Stela-Teodora Trendafilova; Boris Hotinov

2 May 2023 · volume 45 · (issue 5) · pp. 143–147 · PDF [full text]

Abstract: Four Pallas’s leaf warblers (Phylloscopus proregulus) were captured at Durankulak ringing camp, NE Bulgaria, in frames of four days between 12 and 16 October 2022. The species is a rare vagrant in Bulgaria and neighbouring Balkan countries. It has not been captured and ringed neither at Durankulak nor elsewhere in Bulgaria until now. Annual population fluctuations and weather conditions are discussed as possible explanations for that influx.

Keywords: Durankulak, migration, Pallas’s leaf warbler, vagrancy, weather

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