schwarz                                                                      rot                                                                       gelb

                             blau                                                                    blaugehämmert                                                blaufahl

blaufahlgehämmert                                              schwarz-pechschnabel                                            blau-pechschnabel

blaufahl-pechschnabel                                                                gelbfahl                                                 rotfahl

aschfahl-pechzschnabel