Young sp: The post-juvenile moult includes the body, LC, MC and all GC, but not remiges, PC or TT.
Adult SC: The post-breeding moult (June-November) is complete, but c. 35% of the older (2cy+) birds at Ottenby have left one or several SS unmoulted. SS generally moulted from three different centres, often with SS1-4, SS5-7 och SS8-12 in each group. Tail does usually not show any contrasts since all RR are generally shed and grown simultaneously.