| High juvenile mortality during migration in a declining population of a long‐distance migratory raptor S Oppel, V Dobrev, V Arkumarev, V Saravia, A Bounas, E Kret, M Velevski, ... Ibis 157 (3), 545-557, 2015 | 128 | 2015 |
| The cooperation and verification mechanism: shared political irresponsibility between the European Commission and the Bulgarian governments G Dimitrov, K Haralampiev, S Stoychev, L Toneva-Metodieva Sofia: St. Kliment Ohridski University Press, 2014 | 50 | 2014 |
| Assessing the effectiveness of intensive conservation actions: Does guarding and feeding increase productivity and survival of Egyptian Vultures in the Balkans? S Oppel, V Dobrev, V Arkumarev, V Saravia, A Bounas, E Kret, T Skartsi, ... Biological Conservation 198, 157-164, 2016 | 40 | 2016 |
| Impact of power lines on bird mortality in Southern Bulgaria DA Demerdzhiev, S Stoychev, T Petrov, I Angelov, N Nedyalkov Acta Zoologica Bulgarica 61 (2), 175-183, 2009 | 36 | 2009 |
| Status and population trend of the Eastern Imperial Eagle (Aquila heliaca) in Europe in the period 2000–2010 D Demerdzhiev, M Horváth, A Kovács, S Stoychev, I Karyakin Acta Zoologica Bulgarica 3, 5-14, 2011 | 32 | 2011 |
| Studying the demographic drivers of an increasing Imperial Eagle population to inform conservation management D Demerdzhiev, S Stoychev, D Dobrev, S Spasov, S Oppel Biodiversity and Conservation 24, 627-639, 2015 | 28 | 2015 |
| Seasonal dynamics in the exploitation of natural carcasses and supplementary feeding stations by a top avian scavenger V Arkumarev, D Dobrev, A Stamenov, N Terziev, A Delchev, S Stoychev Journal of Ornithology 162, 723-735, 2021 | 23 | 2021 |
| The Adventures of the CVM in Bulgaria and Romania G Dimitrov, K Haralampiev, S Stoychev HAS THE EU’S EASTERN ENLARGEMENT BROUGHT EUROPE TOGETHER?, 213, 2016 | 23 | 2016 |
| Population reinforcement and demographic changes needed to stabilise the population of a migratory vulture S Oppel, V Saravia, A Bounas, V Arkumarev, E Kret, V Dobrev, D Dobrev, ... Journal of Applied Ecology 58 (12), 2711-2721, 2021 | 19 | 2021 |
| Vulture conservation in Bulgaria D Dobrev, S Stoychev Conference 6, 38, 2013 | 19 | 2013 |
| Using GPS and accelerometry data to study the diet of a top avian scavenger V Arkumarev, D Dobrev, A Stamenov, N Terziev, A Delchev, S Stoychev Bird Study 67 (3), 300-310, 2020 | 17 | 2020 |
| Conservation measures undertaken to improve the population status of eastern imperial eagle (Aquila heliaca) in Bulgaria D Demerdzhiev, S Stoychev, D Dobrev, S Spasov, N Terziev Raptor Journal 8 (2014), 27-39, 2014 | 17 | 2014 |
| Distribution, abundance, breeding parameters, threats and prey preferences of the eastern imperial eagle (Aquila heliaca) in European Turkey D Demerdzhiev, D Dobrev, S Stoychev, N Terziev, S Spasov, Z Boev Raptor Journal 8 (2014), 17-25, 2014 | 16 | 2014 |
| Increase of the population of the Eastern Imperial Eagle (Aquila heliaca) in Bulgaria D Demerdzhiev, G Gradev, S Stoychev, I Ivanov, TH Petrov, S Marin Acta zoologica Bulgarica Supplementum 3, 41-54, 2011 | 16 | 2011 |
| Power line design and raptor protection in Bulgaria S Stoychev, T Karafeizov Raptors Worldwide. Budapest: WWGBP & MME, 443-451, 2004 | 16 | 2004 |
| Long-term size and range changes of the Griffon Vulture Gyps fulvus population in the Balkans: a review D Dobrev, R Tsiakiris, T Skartsi, V Dobrev, V Arkumarev, K Stara, ... Bird Conservation International 32 (2), 206-221, 2022 | 15 | 2022 |
| Breeding performance and population trend of the Egyptian Vulture Neophron percnopterus in Bulgaria: conservation implications V Arkumarev, V Dobrev, S Stoychev, D Dobrev, D Demerdzhiev, ... Ornis Fennica 95 (3), 115–127-115–127, 2018 | 15 | 2018 |
| Survival rate and mortality of juvenile and immature eastern imperial eagles (Aquila heliaca) from Bulgaria studied by satellite telemetry S Stoychev, D Demerdzhiev, S Spasov, D Dobrev, BU Meyburg Raptor Journal 8 (2014), 53-60, 2014 | 13 | 2014 |
| Local colonisations and extinctions of European birds are poorly explained by changes in climate suitability C Howard, EL Marjakangas, A Morán-Ordóñez, P Milanesi, A Abuladze, ... Nature Communications 14 (1), 4304, 2023 | 12 | 2023 |
| Status of the Eastern Imperial Eagle (Aquila heliaca) in the European part of Turkey D Demerdzhiev, S Stoychev, N Terziev, ID Angelov Acta Zoologica Bulgarica 3, 87-93, 2011 | 12 | 2011 |
