Newly registered tracks of Raccoon dogs (Nyctereutes procyonoides) indicate the presence of resident population in the region of Bolata dere (NE Bulgaria)

by NIKOLAY NATCHEV
Published 2016-06-01

A new record of the Blotched snake Elaphe sauromates Pallas, 1811 (Serpentes: Colubridae) from an urbanized habitat in Bulgaria

by BORISLAV NAUMOV, NIKOLAY NATCHEV
Published 2016-07-01

Impacts of resource limitations on the reproduction behaviour in the Agile Frog (Rana dalmatina) on the territory of Natura park “Shumensko plato”

by TEODORA KOYNOVA, DIMITAR DOICHEV, NIKOLAY NATCHEV
Published 2020-11-01

First record of the Balkan-Anatolian crested newt (Triturus ivanbureschi Arntzen & Wielstra, 2013) on the territory of the Nature Park “Shumensko plato”

by TEODORA KOYNOVA, MIROSLAV SLAVCHEV, NIKOLAY NATCHEV
Published 2018-10-01

Feeding behaviour in a ‘basal’ tortoise provides insights on the transitional feeding mode at the dawn of modern land turtle evolution

by Nikolay Natchev, Nikolay Tzankov, Ingmar Werneburg, Egon Heiss
Published 2015-08-01

Ontogenetic Changes of the Aquatic Food Uptake Mode in the Danube Crested Newt (Triturus dobrogicus Kiritzescu 1903)

by Nikolay Natchev, Nikolay Natchev, Kristina Yordanova, Sebastian Topliceanu, Sebastian Topliceanu, Sebastian Topliceanu, Teodora Koynova, Dimitar Doichev, Dan Cogălniceanu, Dan Cogălniceanu
Published 2021-04-01

Contributions to the functional morphology of caudate skulls: kinetic and akinetic forms

by Nikolay Natchev, Stephan Handschuh, Simeon Lukanov, Nikolay Tzankov, Borislav Naumov, Ingmar Werneburg
Published 2016-09-01