 Techniques to develop singing aptitude include selective breeding programs, high-protein diets, and stimulating them with music and recordings of bird song.As wild finches generally begin singing during the spring mating season, keepers may also use artificial lights placed in aviaries to encourage increased song.Some vinkeniers claim that finches from the different regions of Belgium sing in different dialects; with birds from the Dutch-speaking Flanders singing "in Dutch" and those from the French-speaking Wallonia singing undesirably "in French".