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Location United Kingdom, Channel Islands
Central coordinates 2o 14.31' West  49o 42.38' North
IBA criteria A4ii, B1ii, B2, C3
Area 1 ha
Altitude 0 - 39m
Year of IBA assessment 2007

Royal Society for the Protection of Birds

Site description A group of igneous rocks about 200 m off the west Alderney coast. The IBA holds the larger of two important gannetries in the Channel Islands.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Northern Gannet Morus bassanus breeding  1998-2000  3,450 breeding pairs  good  A4ii, B1ii, B2, C3  Least Concern 

IBA Monitoring

2007 low favourable high
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

Morus bassanus Northern Gannet 3380 3450 breeding pairs 100 favourable

Whole area of site (>90%) covered by appropriate conservation designation  A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species  The conservation measures needed for the site are being comprehensively and effectively implemented  high 


IUCN habitat Habitat detail Extent (% of site)
Coastline Rock stacks and islets  100%

Land use

Land-use Extent (% of site)
not utilised -

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Les Etacs, Alderney. Downloaded from on 28/10/2016

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