Siberian chiffchaff to be a full species due to its distinctive plumage and vocalisations, being similar to "P. s. sindianus" in these respects. Common chiffchaffs (of the nominate race) and Siberian chiffchaffs do not recognize each other's songs. Pending resolution of the status of the form "fulvescens", which is found where the ranges of common chiffchaff (of the race "abietinus") and Siberian chiffchaff connect and may or may not be a hybrid between these, "tristis" is maintained in "P. collybita" by most checklists. Siberian chiffchaff Siberian chiffchaff ("Phylloscopus (collybita) tristis") is a leaf-warbler which is usually considered a subspecies of the common
Does the Jazz Lead to Destruction in press advertising complaining about jazz. The film is often confused with another jazz comedy, "Why Jessie Learned to Jazz", for Australasian Films and director Frederick Ward, which was announced for production but was likely abandoned. Does the Jazz Lead to Destruction Does the Jazz Lead to Destruction? is a 1919 Australian silent film about the jazz craze. It is considered a lost film. A family of wowsers, the McWowses, oppose jazz dancing but are converted to its joys. Several dances are featured, including 'the Walking Waltz', 'the Jazz', 'the Tickle-Toe' and the 'Whirly Whirly'. These were performed by the