THIS is the fourth annual report to be issued on behalf of the Bird-Ringing Committee of the British Trust for Ornithology.* It covers 1940, the third complete year of working under present arrangements. The series in this form continues the sequence of annual reports by H. F. Witherby, published from 1910 onwards under the general title " The British Birds Marking Scheme." The war has inevitably cu...

Stay at the forefront of British birding by taking out a subscription to British Birds.

Subscribe Now