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Dr Dimitar Demerdzhiev
Dr Dimitar Demerdzhiev

Dimitar Demerdzhiev

phonе: (+359 88) 8352068; e-mail:

Born 22 October 1977, Plovdiv.


2011 — PhD in Zoology: Biology, ecology, and conservation of the imperial eagle in Bulgaria — National Museum of Natural History, Bulgarian Academy of Sciences
2000 — Master’s Degree in Ecology: On the species composition and seasonal dynamics of the avi-fauna in the area of Orizovo Village, Stara Zagora Region — Paisii Hilendarski University of Plovdiv

Research interests

Ecology and behavior of birds, conservation biology, threatened species.

Current projects

LIFE for Eagle’s Habitats LIFE project for conservation of lesser spotted eagle in Bulgaria
Implementation of measures from the Action Plan for the Conservation of the eastern imperial eagle (Aquila heliaca) in the Republic of Bulgaria, BG16M1OP002-3.027-0005-C01
Study of the eastern imperial eagle (Aquila heliaca) population in European Turkey

Most recent publications

Demerdzhiev, D., Dobrev, D., Popgeorgiev, G., Stoychev, S., 2022. Landscape alteration affects the demography of an endangered avian predator by reducing the habitat quality. — Avian Research, 13, Article 100030. doi:10.1016/j.avrs.2022.100030 [PDF]

Demerdzhiev, D., Boev, Z., Dobrev, D., Terziev, N., Nedyalkov, N., Stoychev, S., Petrov, T., 2022. Diet of Eastern Imperial Eagle (Aquila heliaca) in Bulgaria: composition, distribution and variation. — Biodiversity Data Journal, 10: e77746. doi:10.3897/BDJ.10.e77746 [PDF]

Demerdzhiev, D., 2022. Breeding parameters and factors infuencing the reproduction of an expanding Longlegged Buzzard (Buteo rufnus) population under high breeding density conditions. — Journal of Ornithology, 163: 405—415. doi:10.1007/s10336-022-01967-4 [PDF]

Dobrev, D., Tsiakiris, R., Skartsi, T., Dobrev, V., Arkumarev, V., Stara, K., Stamenov, A., Probonas, N., Kominos, T., Galanaki, A., Kret, E., Hallmann, B., Grubač, B., Sušić, G., Marinković, S., Hribšek, I., Skorić, S., Jerrentrup, H., Lucić, V., Kapelj, S., Stoyanov, G., Zakkak, S., Hristov, H., Stoychev, S., Sidiropoulos, L., Bino, T., Demerdzhiev, D., 2021. Long-term size and range changes of the Griffon Vulture Gyps fulvus population in the Balkans: A review. — Bird Conservation International, 1—16. doi:10.1017/S0959270921000198 [PDF]

Dobrev, D., Dobrev, V., Demerdzhiev, D., 2021. Human activities can hinder the breeding of a top avian predator: preliminary results. — Ornis Hungarica, 29 (2): 71—80. doi:10.2478/ orhu-2021-0020 [PDF]

Stoychev, S., Demerdzhiev, D., Horvath, M., 2020. Eastern Imperial Eagle (Aquila heliaca). — In: Keller, V., Herrando, S. Vorisek, P. et al. European Breeding Bird Atlas 2: Distribution, Abundance and Change. European Bird Census. Councul and Lynx Edicions, Barcelona.

Stoychev, S., Demerdzhiev, D., 2020. Long-legged Buzzard (Buteo rufinus). — In: Keller, V., Herrando, S. Vorisek, P. et al. European Breeding Bird Atlas 2: Distribution, Abundance and Change. European Bird Census. Councul and Lynx Edicions, Barcelona.

Lazarova, I., Dobrev, D., Gradev, G., Petrov, R., Stoychev, S., Klisurov, I., Demerdzhiev, D., 2020. Main mortality factors for the Eastern Imperial Eagle (Aquila heliaca Savigny, 1809) in Bulgaria. — Ornis Hungarica, 28 (2): 120—134. doi:10.2478/orhu-2020-002 [PDF]

Dobrev, D., Arkumarev, V., Dobrev, V., Stamenov A., Demerdzhiev, D., 2020. Use and selection of roost sites by Eurasian Griffon Vultures Gyps fulvus in Bulgaria. — Bird Study, 67 (4): 496—504. doi:10.1080/00063657.2021.1950122 [PDF]

Demerdzhiev, D., Ratarova-Georgieva, V., 2019. International Symposium on Research and Conservation of Lesser Spotted Eagle Clanga pomarina Brehm, 1831 — Bourgas, Bulgaria, 2017. — Acta Zoologica Bulgarica, Suppl. 14: 3—5. [PDF]

More complete list of publications — section e-Natura | Staff publications