Black and white picture of Tim Birkhead with binoculars in hand

Tim Birkhead

Tim Birkhead was scientific adviser to the BBC's 'Wonder of Song' (iPlayer) and is emeritus professor of zoology at the University of Sheffield. His research has focused on promiscuity in birds, and on birds' eggs. His latest book is 'Birds and Us' (Penguin, £25).

Recent articles by Tim Birkhead