A practical handbook of British birds, London, Witherby, 1920-24, birds, Great Britain, Savi's warbler, grasshopper warbler, lanceolated warbler, barred warbler, orphean warbler, garden warbler, blackcap, The illustration features a detailed study of various warbler species, arranged systematically for identification. Each bird is numbered, showcasing distinct characteristics for each species. The top row includes several warblers perched on branches, highlighting their unique plumage and markings. Below, additional specimens exhibit different postures and orientations, emphasizing variations in size, shape, and coloration. The accompanying labels provide scientific names, offering insight into their taxonomy. This educational representation serves as a valuable resource for ornithologists and bird enthusiasts alike, illustrating the diversity within the warbler family.