Books & Articles
  • Mitchell, P.I., Newton S.F., Ratcliffe, N. & Dunn T.E. (2004) "Seabird Populations of Britain and Ireland" T. & A.D. Poyser, London
    [notes]
    Page at Bloomsbury Publishing
    • Madden, B. & Newton, S.F. (2004) "Herring Gull (Larus argentatus)" in Mitchell, P.I. et al. (2004)
      [notes]

Species
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External links