Thanks to Britain’s mild winters, chiffchaffs are staying put | UK news
For many birders, the first proper sign of spring comes when they hear the cheery two-note song of the chiffchaff, a small, migratory warbler which, like the kittiwake and the cuckoo, is named after the sound it makes. Chiffchaffs spend the winter far closer to home than most other members of their family: the majority heading to Spain, Portugal or north-west Africa. This is in sharp contrast to their close relative the willow warbler, which heads all the way across the Saharato southern Africa, and usually arrives back here from early April, two or three weeks later than the chiffchaff. But thanks to a long run of very mild winters in southern Britain – a clear consequence of the global climate crisis – some chiffchaffs are now staying put. They now spend the winter close to their breeding areas, often near water where small insects are more numerous. This, along with the unseasonably warm spell in mid-March, explains why this spring, chiffchaffs began to appear a few days earlier than usual. The British Trust for …
