First recorded in the UK in the early 1960s, the skulking brown job with a big voice started colonising Kent in the 1970s. However, 30 years ago, the small population of this resident warbler was close to eradication after the big freezes of the mid-1980s. Since that time, the recovery has been nothing short of sensational. Despite some harsh winters, particularly over the last decade, Cetti’s Warblers have knuckled down to some serious colonisation. There are now more than 2,000 singing males, mostly in the southern half of the country.