Coleiro Corner Tui Tui Coleiro Professor Tui Tui 24 Hours Booklet To Teach Your Pardinho - Measures 12 cm and weighs approximately 10.5 g. The male, with its unmistakable white and black collar, received this name. In addition to the collar, next to the black throat a white “mustache” defines the area under the beak yellowish or slightly gray-green. There are white-breasted males and yellow-breasted males (both belong to the nominal form, the yellow-breasted form being just a morph or variation).