Pied Wagtail - 1949 status

Motacilla alba yarrellii

Numerous breeder, and nesting on most islands (Ramsey, Skomer, Skokholm, Caldey, not Grassholm).  Roost of 600-1000 in gorse at Martletwy, Jan-March 1935.  Also regular and numberous autumn passage migrant.

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