Understanding sonograms

01 July 2000
Comments Main paper ABSTRACT Although sonograms are being used more and more to portray bird sounds, many people find them hard to understand. Once understood, however, they can be useful to the amateur as well as to the professional, so long as one does not try to read t...
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A new era for British Birds

01 July 2000
Comments Main paper We apologise to our readers for the late arrival of the June issue, and, we trust, for the rather-less-late arrival of this copy. We hope to be back on course by the September issue. There have been major changes, in particular in ownership, while from...
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