Historia naturalis bulgarica

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Recent changes in the presence status and numbers of ruddy shelduck (Tadorna ferruginea) in the Eastern Balkans


Peter Shurulinkov https://orcid.org/0000-0002-6586-8690; Girgina Daskalova; Konstantin Popov; Svetla Dalakchieva; Rossen Tzonev https://orcid.org/0000-0001-8112-1354; Ivaylo Dimchev; Andrey Ralev

9 April 2020 · volume 41 · [6] · pages 41–49 · PDF

Abstract: The ruddy shelduck (Tadorna ferruginea) is a species of great conservation importance within its European breeding grounds. Tadorna ferruginea is included in the Red Data Book of Bulgaria (2015) in the category “Critically Endangered”. The species is qualified as “Near Threatened” in EU27 countries as a whole. Recent data from the Balkan parts of the species range indicate its considerable enlargement. During the last 10-year period, the presence status of the ruddy shelduck during winter changed from incidentally wintering in low numbers to regular and even locally abundant wintering species. The numbers of T. ferruginea migrating over the Eastern Balkans increased substantially, especially during autumn. The reasons of these expansion of the species are discussed.

Keywords: Balkan Peninsula, distribution, migration, population increase, ruddy shelduck, winter numbers

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Shurulinkov P., Daskalova G., Popov K., Dalakchieva S., Tzonev R., Dimchev I., Ralev A. 2020 Recent changes in the presence status and numbers of ruddy shelduck (Tadorna ferruginea) in the Eastern Balkans. Historia naturalis bulgarica 41: 41–49.

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