Sylvia atricapilla atricapilla

Fairly common summer resident in suitable tangled copses even in the west.  Appears on the islands with last species in late April and early May; rarely in autumn.

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

More about the Blackcap in Pembrokeshire