The Redstart was considered to be a sporadic breeder in Pembrokeshire prior to the 1984-88 survey. Fieldwork during that survey revealed a previously unsuspected population nesting around the lower parts of the Preseli Hills, plus a few scattered pairs elsewhere. They were similarly distributed during the 2003-07 atlas, but found in 33% more tetrads. It is estimated that about 200 pairs were involved.
Graham Rees
Fieldwork 2003-07 (based on 490 tetrads)
Red = breeding confirmed = 21
Orange = breeding probable = 29
Yellow = breeding possible = 2
Total tetrads in which registered = 52 (10.6%)