Cuculus canorus canorus

Common summer visitor.  Bred Skokholm 1928 and has also bred on Caldey; a regular but scarce passage migrant on the islands.

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

More about the Cuckoo in Pembrokeshire