Complex sentence: In 1963 a search of 23 sites in Cornwall found only eight small colonies left, all to the north of Bude and thus outside the area of this SSSI; the Large Blue was last seen in Cornwall in 1973.
Split into simpler sentences: In 1963 a search of 23 sites in Cornwall found only eight small colonies left, all to the north of Bude and thus outside the area of this SSSI. The Large Blue was last seen in Cornwall in 1973.