THIS is the ninth report f issued on behalf of the Bird-Ringing Committee of the British Trust for Ornithology, continuing the earlier sequence by H. F. Witherby published under the title " The British Birds Marking Scheme."The Committee has been reconstituted by the Council of the Trust with the following members :--Dr. A. Landsborough Thomson (Chairman), A. W. Boyd, P. A. D. Hollom, the Earl of Il...

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