
Demerdzhiev, D., Dobrev, D., Delchev, A., Iliev, M., Georgiev, G., Terziev, N., Angelov, I., Arkumarev, V., 2025. Temporally determinate, but spatially consistent breeding performance of Lesser Spotted Eagle (Clanga pomarina) along the southern periphery of its distribution. — Diversity, 17 (8): 566. [PDF]
Angelov, I., Sarrouf, M., Al Lawati, R., Vegh, A., 2025. High occurrence of polygynous trios in a dense Egyptian Vulture Neophron percnopterus population. — Ringing & Migration, 1—5. https://doi.org/10.1080/03078698.2025.2559118 [PDF]
Angelov, I., Sarrouf, M., Al Lawati, R., McGrady, M., 2025. Stability of a resident Egyptian Vulture Neophron percnopterus population on Masirah island, Oman. — Sandgrouse, 47 (1): 193—202. [PDF]
Angelov, I., Klisurov, I., Stoyanov, G., Gradinarov, D., Stoynov, E., Arkumarev, V., Zhisov, P., Yordanov, E., Dimchev, I., Dobrev, D., Mladenov, V., Dobrev, V., Stamenov, A., Vasilev, V., Iliev, M., Peshev, H., Demerdzhiev, D., Stanchev, S., Petrov, P., Yovchev, G., Kolchagov, R., 2025. Drones revolutionize the monitoring of notoriously difficult to study raptors: breeding performance of Golden Eagles (A. chrysaetos) in Bulgaria. — Poster presentation at BalkanBio conference, 30—31 Oct., Plovdiv University, Plovdiv, Bulgaria. [PDF]
Angelov, I. D., Dobrev, D., Claase, M. J., Fay, J.M., de Bont, M., Buechley, E. R., 2025. Using satellite imagery to map potential colonies of Rüppell’s vultures (Gyps rueppelli) in Central and East Africa. — Ibis. https://doi.org/10.1111/ibi.13454 [PDF]
Angelov, I., 2025. The first documentation of a juvenile eastern imperial eagle (Aquila heliaca) with an unstreaked body. — Raptor Journal, 19. https://doi.org/10.2478/srj-2025-0005 [PDF]
Daskalova, G., Shurulinkov, P., Klisurov, I., Angelov, I., Demerdzhiev, D., Petrov, R., 2024. Observations on the behavior of the saker falcon (Falco cherrug) breeding in Bulgaria. — Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa”, 67 (1): 153—165. [PDF]
Angelov, I., Ragyov, D., Stoyanov, G., Koychev, V., Tonchev, B., Shurulinkov, P., Demerdzhiev, D., Stoynov, E., Dimchev, I., Gradinarov, D., Hristov, H., Dobrev, D., Arkumarev, V., Vassilev, V., Klisurov, I., Dobrev, V., Kurtev, M., Yotsova, T., Daskalova, G., Nikolov, B., Stoychev, S., Profirov, L., Iankov, P., Petrov, T., 2024. Status of the Golden Eagle in Bulgaria. — In: Bautista-Rodríguez, J., Ellis, D. H. (eds). The Golden Eagle around the world. Hancock House Publishers.
Angelov, I., Abebe, Y. D., Yotsova, T., Dobrev, V., 2024. Another case of communal breeding in the White-backed Vulture Gyps africanus. — Vulture News, 86: 13—15. [PDF]
Angelov, I., 2024. Exceptionally Low Proportion of Adult Pairs and Male-Skewed Adult Sex Ratio in a Declining Population of the Golden Eagle Aquila chrysaetos (L., 1758) (Accipitriformes: Accipitridae). — Acta zoologica bulgarica. [PDF]