Bij het determineren van een gele kwikstaart geeft Svensson ook een Motacilla flava dombrowskii (karakteristieke koptekening van deze subspecie), deze kan ik niet terugvinden in het lijstje, is dit de reden :
Birds looking like male flava [= 'Blue-headed Wagtail'] except for blackish ear-coverts (varying from pure black to dark grey) and slightly darker crown and nape are often named 'dombrowskii', but we consider them to reflect interbreeding between feldegg [= 'Black-headed Wagtail'] and flava. It is often suggested in the literature that 'dombrowskii' could also be an intergrade between flava and thunbergi [= 'Grey-headed Wagtail'], but we have not seen any such birds showing a distinct white supercilium and blackish ear-coverts from the areas where flava and thunbergi intergrade. Both 'superciliaris' and 'dombrowskii' are rather frequent during spring migration in (e.g.) East Africa and the Middle East. Today, most authors agree that 'superciliaris', 'xanthophrys' and 'dombrowskii' are intergrades, as no area is known in which the majority of the population match any of these forms, and the majority of breeding records of 'superciliaris' and 'dombrowskii' come from the wide zone of intergradation between feldegg and flava. Intergrades between feldegg and flava are highly variable in the colour of the crown, and many birds are intermediate and difficult to place in either 'superciliaris' or 'dombrowskii'. (Richard Klim)
groeten
Herbert