Letters

01 September 1978
Comments Letters Great Blue and aberrant Grey Herons I was interested to learn of the two observations of melanistic Grey Herons Ardea cinerea (Brit. Birds 70: 76, 345-346), as well as the one seen in the Camargue, France, by Dr J. G. and Dr P. F. Harrison and ...
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Letters

01 June 1958
Comments Letters S I R S , -- U n d e r the above title (anlea, vol. L, p p . 432-434), R. Hewson has usefully drawn attention to the aerobatics-- familiar in individuals--that are sometimes performed by flocks of Ravens (Corvus corax) and has discussed questions suggeste...
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