Atlas of nesting birds in Bulgaria

Moustached Warbler

(Acrocephalus melanopogon)

Category of conservation concern (IUCN, 2020) – Least Concern

Population size: 2020: 20-57 pairs (2007: 5-25 pairs)

Distribution pattern

With dispersed single sites, mainly along the Black Sea coast and the Danube River. Confirmed breeding during the present mapping was established only in the Durankulak Lake, by ringed specimens in 2002 during the breeding season. On May 22, 1995 in extensive reed beds in the western part of the Vaya Lake, four singing individuals were observed (SCOTT 1995). Observations during the breeding season in some localities along the Danube River (Srebarna Lake), as well as in the marshy wetlands in Southeastern Bulgaria.

Population estimation for the period 2013 – 2020: During the period 2013-2020, the species was not found in five squares, where it was found before the year 2013. No new breeding sites have been identified, but the number of breeding pairs in the already known ones have been updated.

Population size in Special Protection Areas of Natura 2000: 20-55 pairs (100% of the population). The highest numbers have been registered in the SPAs “Durankulak Lake” (15-35 pairs) and “Shabla Lake Complex” (5-20 pairs).

Big size map

Breeding distribution 2013 – 2020 – The distribution and the estimation of the population size of the species for the period 2013 – 2020 is presented –

Comparative distribution of the species compared to the first breeding birds atlas (Iankov, 2007): Breeding locality until 2007 | Breeding locality until 2007, confirmed after 2015 – | New breeding locality after 2015. – The breeding localities after 2015 are identified on a base of raw data from


Breeds mainly in marshes and in water fringe vegetation. 

Trends in population changes for the period 2013-2020

Short-term trend of population size:


Long-term trend of population size:


Short-term trend of distribution:


Long-term trend of distribution:



Drainage of wetlands, burning and mowing of reeds near water bodies.

Mikhail Iliev