American Marsh Hawk in Norfolk

01 December 1971
Comments Main paper This is the long-delayed story of an immature ring-tailed harrier Circus sp that wintered in the area of Cley and Salthouse, Norfolk, from October 1957 to April 1958. Plans for the co-authorship of an earlier paper foundered and with the passage of time t...
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Cannibalism in Herring Gulls

01 December 1971
Comments Main paper The Herring Gull Larus argentatus is a notorious killer during the breeding season. Young chicks are repeatedly struck on the head or often gripped by the neck and worried until dead (plate 85a). Usually, these chicks have trespassed into neighbouring ter...
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