(Oenanthe isabellina)Category of conservation concern (IUCN, 2020) - Least Concern Population size: 3 500 – 7 000 pairs Distribution pattern With patchy and dispersed distribution, gradually decreasing in density of the breeding sites from southeast to northwest. The...
(Sylvia crassirostris)Category of conservation concern (IUCN, 2020) - Least Concern Population size: 400- 6 00 pairs Distribution pattern With patchy and more dense distribution along the valleys of the rivers Struma and Mesta and their adjacent areas (especially in...
(Hippolais icterina)Category of conservation concern (IUCN, 2020) - Least Concern Population size: 150 - 300 pairs Distribution pattern With patchy and dispersed distribution in both plains and mountains throughout the country. More dense along the Black Sea coast,...
(Aquila heliaca)Category of conservation concern (IUCN, 2020) - Vulnerable Population size: 2020: 29-32 pairs (2007: 30–35 pairs) Distribution pattern The main part of the population is concentrated in Southeastern Bulgaria - Sakar, Sliven District, the southernmost...
(Acrocephalus agricola)Category of conservation concern (IUCN, 2020) - Least Concern Population size: 2020: 82-153 pairs (2007: 50-80 pairs) Distribution pattern With very limited distribution, mainly in the Durankulak and the Shabla lakes (with Shabla Tuzla) and with...
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