Stercorarius parasiticus – SGIWEN Y GOGLEDD
Mathew records in immature shot at Goodwick (no date). Occasionally seen Skokholm, and off Grassholm, usually in Aug-Sept, sometimes May-June.
Stercorarius parasiticus – SGIWEN Y GOGLEDD
Mathew records in immature shot at Goodwick (no date). Occasionally seen Skokholm, and off Grassholm, usually in Aug-Sept, sometimes May-June.