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Location Turkey, Mugla
Central coordinates 28o 38.00' East  36o 52.00' North
IBA criteria A1, A4i, A4iii, B1i, B2
Area 14,000 ha
Year of IBA assessment 2004

Doga Dernegi (Partner Designate)

Site description A brackish lake (6,300 ha; max. depth 30 m) fed by springs and several streams. Extensive reedbeds (Phragmites) are found along the east, south-east and northern shores. The delta consists of a labyrinth of (former) flood-plains, reedbeds, lakes and sand beaches. Arable land and forested hills surround the IBA, which also includes a few hundred hectares of Liquidambar forest. Economic activities include greenhouse farming and cattle-grazing.

Key Biodiversity This is an important site for wintering waterbirds. Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (thought to breed in the surrounds).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Red-crested Pochard Netta rufina winter  341-800 individuals  B1i  Least Concern 
Squacco Heron Ardeola ralloides breeding  50-60 breeding pairs  B2  Least Concern 
Pygmy Cormorant Microcarbo pygmaeus winter  1996  40 individuals  A1  Least Concern 
Great Cormorant Phalacrocorax carbo winter  1,525-3,112 individuals  B1i  Least Concern 
Common Coot Fulica atra winter  2,201-119,000 individuals  A4i, B1i  Least Concern 
A4iii Species group - waterbirds winter  27,142-125,489 individuals  A4iii   

IBA Monitoring

2013 medium very unfavourable low
Medium - based upon reliable but incomplete / partially representative data

Agriculture and aquaculture annual & perennial non-timber crops - agro-industry farming happening now some of area/population (10-49%) slow but significant deterioration medium
Residential and commercial development tourism and recreation areas happening now some of area/population (10-49%) slow but significant deterioration medium
Transportation and service corridors shipping lanes happening now small area/few individuals (<10%) slow but significant deterioration low

Tachybaptus ruficollis Little Grebe 11856 159 - 2 very unfavourable

Most of site (50-90%) covered (including the most critical parts for important bird species)  No management planning has taken place  Some limited conservation initiatives are in place  low 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Köycegiz - Dalyan Specially Protected Area 38,500 protected area contains site 14,000  
Marmaris MP National Park 29,162 protected area overlaps with site 5,616  
Mugla Koycegiz YHGS Wildlife Development Area 31,483 protected area contains site 14,000  


IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest  -
Wetlands (inland) Standing freshwater; Water fringe vegetation  -
Coastline Lagoons; Sand dunes & beaches  -

Land use

Land-use Extent (% of site)
agriculture 10%
fisheries/aquaculture 40%
tourism/recreation 50%

Protection status National None International High8,000 ha of IBA covered by Mediterranean Specially Protected Area (Köyceðiz Dalyan, 38,500 ha).

Related state of the world's birds case studies

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Köyceğiz Lake. Downloaded from on 26/10/2016

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