302 News and comment Maddy Hine and Russ Malin
308 A history of breeding Slavonian Grebes in Britain Stuart Benn and Malcolm Harvey
319 Fifty years of Common Guillemot studies on Skomer Island Tim Birkhead
335 Harry F. Witherby: a biographical sketch Jeff R. Martin
350 Wintering Blackcaps in Cumbria John Callion
359 Recent reports
This year is turning out to be something of a milestone-filled year. As well as the BTO reaching 90 and the RBBP celebrating 50 years, 2023 marks the 150th anniversary of Harry Witherby’s birth and the 50th year since the start of Tim Birkhead’s long-term – and ongoing – study on Common Guillemots on Skomer. These last two anniversaries are both covered in this month’s issue: in the case of the former, as an overview of what Harry Witherby brought to British ornithology during his life (he was, of course, the first editor of British Birds – but he achieved plenty more than just that); and in the case of the latter, a summary of the many faciniating things that can be learnt from a long-term study of a single species at a single location. Finally, another paper looking back across the decades completes this month’s trio of main papers: a history of breeding Slavonian Grebes in Britain.