Troglodytes troglodytes troglodytes

Common resident, also breeding Caldey, Skomer, and Ramsey, but not Skokholm or Grassholm.  Ringed Wrens returned to winter on Skokholm.

R.M.Lockley, G.C.S.Ingram, H.M.Salmon, 1949, The Birds of Pembrokeshire, The West Wales Field Society

More about the Wren in Pembrokeshire