The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific conceptsIs bird-tagging of any benefit to the birds? I’ve read that cuckoos arriving in Thetford forest are caught and have an electronic tag attached to gather data for a cuckoo-tracking project. Is this really going to provide any knowledge that will help the birds, or does it simply enable humans to admire their own technical wizardry? Martin Hayden, Bury St Edmunds, Suffolk• Post your answers – and new questions – below or email them to nq@theguardian.com

Source: The Guardian June 25, 2019 11:48 UTC