UK128
Crussa Field and the Heogs


IBA Justification

The site was identified as important in 2007 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):
Species Current IUCN Red List Category Season Year(s) Population estimate at site IBA criteria met
Whimbrel Numenius phaeopus LC breeding 1994 23 breeding pairs C7
Arctic Jaeger Stercorarius parasiticus LC breeding 2002 34 breeding pairs C7

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2007).


IBA Conservation

IBA conservation assessment
Year of assessment (most recent) State (condition) Pressure (threat) Response (action)
2007 near favourable very high low
Was the whole site assessed? State assessed by Accuracy of information
yes population good

State (condition of the trigger species' populations)
Scientific name Common name Reference population Actual population Units % of population remaining Result
Stercorarius parasiticus Arctic Jaeger 42 34 breeding pairs 81 near favourable

Pressure (threats to the trigger species and/or their habitats)
Threat level 1 Threat level 2 Timing Scope Severity Result
Climate change and severe weather habitat shifting and alteration happening now whole area/population (>90%) very rapid to severe deterioration very high

Response (conservation actions taken for the trigger species and/or their habitats)
Protected-area designation Management planning Other conservation action Result
Whole area of site (>90%) covered by appropriate conservation designation Unknown Not assessed low
For more information about IBA conservation status, please click here

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA with IBA (ha)
Crussa Field and the Heogs Site of Special Scientific Interest (UK) 469 protected area overlaps with site 467

Habitats

Habitat (IUCN level 1) Habitat detail Extent (% of site)
Rocky areas (eg. inland cliffs, mountain peaks) -
Shrubland Heathland -
For more information about the IUCN Habitat classification, please click here.

Land use

Land-use Extent (% of site)
agriculture -


Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Crussa Field and the Heogs. Downloaded from https://datazone.birdlife.org/site/factsheet/crussa-field-and-the-heogs-iba-united-kingdom on 27/02/2024.