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Location Bulgaria, Burgas
Central coordinates 26o 25.42' East  42o 51.90' North
IBA criteria A1, B1iv, B2, B3, C1, C5, C6
Area 99,264 ha
Altitude 145 - 1,126m
Year of IBA assessment 2005

Bulgarian Society for the Protection of Birds



Site description The central ridge of the eastern Stara Planina mountains, covered by broadleaved deciduous forests, pasture and arable land. A great number of minor but distinct ridges slope down north and south to the valleys of the Rivers Titcha and Luda Kamtchia. These side-valleys are narrow and deeply incised, with steep slopes. The underlying rock is limestone and sandstone, and there are some sand quarries in the region. The forests are dominated by Fagus or Quercus, with Carpinus in some places, and there are natural mixed forests of Abies and Fagus in the western part of the area.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Hazel Grouse Bonasa bonasia resident  1996  80-760 breeding pairs  medium  C6  Least Concern 
Black Stork Ciconia nigra breeding  1996  11-12 breeding pairs  good  C6  Least Concern 
Falco peregrinus breeding  1998  4-6 breeding pairs  good  C6  Not Recognised 
Golden Eagle Aquila chrysaetos resident  1996  4-6 breeding pairs  good  C6  Least Concern 
Eastern Imperial Eagle Aquila heliaca resident  1996  1-2 breeding pairs  good  A1, C1, C6  Vulnerable 
Lesser Spotted Eagle Clanga pomarina breeding  2000  7-8 breeding pairs  good  C6  Least Concern 
Short-toed Snake-eagle Circaetus gallicus breeding  2000  6 breeding pairs  good  B2, C6  Least Concern 
Booted Eagle Hieraaetus pennatus breeding  1998  4 breeding pairs  good  B2, C6  Least Concern 
European Honey-buzzard Pernis apivorus breeding  1996  8-10 breeding pairs  good  C6  Least Concern 
Corncrake Crex crex breeding  2005  100-120 breeding pairs  good  A1, C1, C6  Least Concern 
Middle Spotted Woodpecker Leiopicus medius resident  2000  690-6,600 breeding pairs  medium  B3, C6  Least Concern 
Red-breasted Flycatcher Ficedula parva breeding  1998  25 breeding pairs  good  C6  Least Concern 
Semi-collared Flycatcher Ficedula semitorquata breeding  2000  95-615 breeding pairs  good  B2, C6  Near Threatened 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Ardachlaka Managed Reserve 100 protected area contained by site 100  
Ecocorridor Kamchiya - Emine - BG0000393 Habitats Directive 28,055 protected area is adjacent to site 0  
Golyama Kamchiya - BG0000501 Habitats Directive 217 protected area is adjacent to site 0  
Kersenlika-Ardachlaka Buffer Zone 90 protected area contained by site 90  
Kotlenska Mountain - BG0002029 Birds Directive 99,264 is identical to site 99,264  
Kotlenska planina - BG0000117 Habitats Directive 69,059 protected area contained by site 69,059  
Luda Kamchiya - BG0000139 Habitats Directive 6,111 protected area is adjacent to site 0  
Orlitza Reserve 567 protected area contained by site 567  
Orlovi Pesteri National Monument 5 protected area contained by site 5  
Preslavska planina - BG0000421 Habitats Directive 14,060 protected area is adjacent to site 0  
Reka Gorna Luda Kamchiya - BG0000136 Habitats Directive 2,277 protected area overlaps with site 1,326  
Stara reka - BG0000279 Habitats Directive 146 protected area is adjacent to site 0  
Tvardishka planina - BG0000211 Habitats Directive 38,650 protected area overlaps with site 2,452  
Urushki Skali National Monument 10 protected area contained by site 10  
Zlosten Natural Monument 358 protected area contained by site 358  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland  67%
Shrubland Scrub  1%
Grassland Mesophile grasslands; Steppes and dry calcareous grassland  15%
Wetlands (inland) Rivers and streams; Standing freshwater  1%
Rocky areas Inland cliffs  1%
Artificial - terrestrial Arable land; Forestry plantations; Other urban and industrial areas  15%

Land use

Land-use Extent (% of site)
agriculture 27%
forestry 66%
urban/industrial/transport 1%
tourism/recreation 5%

Protection status National Low International None100 ha of IBA covered by Nature Reserve (Kersenlika-Ardachlaka, 100 ha). 567 ha of IBA covered by Nature Reserve (Orlitza, 567 ha). 5 ha of IBA covered by National Monument (Orlovi Pesteri, 5 ha). 10 ha of IBA covered by National Monument (Urushki Skali, 10 ha). 358 ha of IBA covered by National Monument (Zlosten, 358 ha). 90 ha of IBA covered by Buffer Zone (Kersenlika-Ardachlaka, 90 ha).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Kotlenska Mountain. Downloaded from http://www.birdlife.org on 31/07/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife