Author Tim Birkhead
Tim Birkhead

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

How to identify chicks

From baby blue tits and cygnets to cuckoos and ducklings, here is your guide to spring chicks emerging across the UK.
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