More than 30 Swifts gathered around an established nesting house, with young-looking birds repeatedly turning towards entrances and empty gaps. The close passes suggested prospecting, but also resembled the little-understood behaviour known as “banging”.

Why do Blackcaps now spend winter in Britain instead of migrating to southern Europe? Discover how bird ringing, genetics and garden feeding have revealed one of the most remarkable examples of rapid evolution in a wild bird—and what it tells us about migration and climate change.

Discover why birds sing at dawn and what the dawn chorus really means. Exploring the latest research on Reed Buntings, bird song, female choice and extra-pair mating, this evidence-based guide reveals how modern science is reshaping our understanding of one of nature's greatest spectacles.