Chroicocephalus novaehollandiae (Witkopmeeuw)
discussie
This seems to be a small gull; the feather was found in Devenport, New Zealand, in December 2015. The feather is 15.8 cm long. Uwe
Alex
Administrator
Administrator
here is the link as it is considered to be a subspecies of the Silver gull (at least at the moment)