Cetti’s warblers can be seen all year round in areas of dense scrub. They feed mainly on insects and have a distinctive, explosive song. They have only recently started breeding in the UK. http://www.irthlingboroughlakesandmeadows.org/wp-content/uploads/2015/08/XC176480-T09-Cettis-warbler-david-m.mp3 Cetti’s Warbler