RSPB reserve · Holyhead, Anglesey

South Stack Cliffs birdwatching guide

South Stack's sea cliffs stack thousands of guillemots and razorbills above the lighthouse each summer, with puffins among them and choughs tumbling over the heath year-round. Ellin's Tower gives telescope views of the colony without going near the cliff edge.

Key facts

Habitat
coastal
Size
316 ha
Entry fee (adult)
Free
Entry fee (child)
Free
Membership required
No
Hides
1
Wheelchair access
Limited / none
Car park
Yes
Car park to hides
300m to Ellin's Tower seabird centre
Toilets
Yes
Dogs
Allowed
Status
open
Best seasons
spring, summer

Species by season

SeasonSpeciesLikelihoodNotes
springChough (Pyrrhocorax pyrrhocorax)commonBritain's easiest place to watch this rare crow
springPuffin (Fratercula arctica)frequent
summerPuffin (Fratercula arctica)frequent

Getting there

Holyhead, Anglesey, LL65 1YH

View on OpenStreetMap · Official website

Facilities & opening

Reserve open at all times; level path to the Ellin's Tower viewpoint, but 25 uneven steps on the alternative route

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Information last updated 25 July 2026.