Complex sentence: The Melodious and Icterine Warblers usually have long bills and a yellowish tint to their plumage, but the Booted Warbler is similar in colour, although it is smaller, more delicately built and has a flesh-coloured bill.
Split into simpler sentences: The Melodious and Icterine Warblers usually have long bills and a yellowish tint to their plumage. The Booted Warbler is similar in colour, although it is smaller, more delicately built and has a flesh-coloured bill.