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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') at the site:

Species	Red List1	Season	Year(s)	Size	IBA criteria
Red-billed Chough Pyrrhocorax pyrrhocorax	LC	breeding	2001-2004	14 breeding pairs	B2

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2007) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2007) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	likely in short term (within 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Human intrusions and disturbance	likely in short term (within 4 years)	some of area/population (10-49%)	moderate to rapid deterioration	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	No management plan exists but the management planning process has begun	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation	% overlap with IBA
1950	Mynydd Cilan	Nature Reserve	6
1957	Llyn	Area of Outstanding Natural Beauty	87
1957	Porth Ceiriad, Porth Neigwl ac Ynysoedd Sant Tudwal	Site of Special Scientific Interest (UK)	55
1957	Porth Ceiriad	Nature Reserve	1
1957	Lleyn (Llyn)	Area of Outstanding Natural Beauty	100
1974	Llyn Coast	Heritage Coast	40
1996	Pen Llŷn a`r Sarnau/ Lleyn Peninsula and the Sarnau	Site of Community Importance (Habitats Directive)	13
1998	Mynydd Cilan; Trwyn y Wylfa ac Ynysoedd Sant Tudwal	Special Protection Area (Birds Directive)	100
1998	Muriau	Nature Reserve	4
2000	Clogwyni Pen Llŷn/ Seacliffs of Lleyn	Site of Community Importance (Habitats Directive)	18
2005	Pen Llyn a`r Sarnau / Lleyn Peninsula and the Sarnau	Marine Protected Area (OSPAR)	18

Habitat1	Habitat detail	% of IBA
Grassland		major (>10)
Marine Coastal/Supratidal		-

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Mynydd Cilan, Trwyn y Wylfa ac Ynysoedd Sant Tudwal (United Kingdom). Downloaded from https://datazone.birdlife.org/site/factsheet/mynydd-cilan-trwyn-y-wylfa-ac-ynysoedd-sant-tudwal-iba-united-kingdom on 23/11/2024.