Tichodroma 33 (2021)

Original papers
  • Shurulinkov P., Ralev A., Tzvetkov P., Valchev K., Daskalova G., Arangelov S., Kolchagov R., Hristov I. & Dimov P.: Endangered birds of old growth forests in the Pirin National Park, SW-Bulgaria: habitat preferrences, distribution and population sizes in 2001-2019


Short communications

  • Flajs T.: Occurrence of the Ural owl (Strix uralensis) in forests of the Malá Fatra National Park (NW Slovakia)


Others

 


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