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Location United Kingdom, Scotland
Central coordinates 4o 39.68' West  54o 50.82' North
IBA criteria B1i, C3
Area 454 ha
Altitude 74 - 77m
Year of IBA assessment 2007

Royal Society for the Protection of Birds

Site description Two lochs, with associated wetlands and numerous islands, situated about 3 km from the coast of outer Wigtown Bay. These lochs hold the largest inland Phalacrocorax carbo colony in Great Britain. Sixty different bird species breed within the SSSI.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Great Cormorant Phalacrocorax carbo breeding  1991  520 breeding pairs  good  B1i, C3  Least Concern 

IBA Monitoring

2007 low unfavourable low
Good - based on reliable and complete / representative data

No known threats no known threats happening now small area/few individuals (<10%) no or imperceptible deterioration low

Phalacrocorax carbo Great Cormorant 520 343 breeding pairs 66 unfavourable

Whole area of site (>90%) covered by appropriate conservation designation  No management planning has taken place  Very little or no conservation action taking place  low 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Mochrum Lochs Site of Special Scientific Interest 460 is identical to site 454  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Blanket bogs; Standing freshwater; Water fringe vegetation  100%

Land use

Land-use Extent (% of site)
agriculture 30%
water management 70%

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Mochrum and Castle Lochs. Downloaded from on 27/10/2016

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