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Résumé :
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In May 2015, I discovered a singing male Iberian Chiffchaff Phylloscopus ibericus on territory in the Nedd Valley, Gower. Some weeks later, I made a considerably more startling discovery while attempting to study and record the bird's song variations for my BBRC submission. The male Iberian Chiffchaff was observed feeding four recently fledged young; also present was an adult female, giving the distinctive and diagnostic call of Iberian Chiffchaff. The pair went on to raise a second brood and at least seven chicks fledged in total. This is the first known breeding attempt for this species in the UK, and this paper describes the full circumstances of the record.
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