Letters

01 September 1991
Comments Letters Roosting behaviour of seabirds. It is human nature to avoid raising even obvious questions when no answer appears to be in sight. I nevertheless raise such a question here. Birds of the open ocean, far from land, must not only roost but also sleep on t...
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Letters

01 March 1959
Comments Letters "SUB-SONG" AND "SECONDARY SONG" SIRS,---With regard to the paper by Miss P. M. Piicher and myself on "The nature of sub-song" (antea, vol. li, pp. 509-514), I very much regret to find that we were incorrect in stating that the term "sub-song" was used by ...
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