Main author: Magnus Hellström, September 2014.
Supplemented by: Simon S. Christiansen and Aron Edman, September 2014.
Citation: Ottenby Bird Observatory. 2015. Ringers’ DigiGuide – Phylloscopus collybita. www.ringersdigiguide.ottenby.se
Summer SC sp
Winter wp sp
Young sp: The post-juvenile moult includes body, LC, MC and a variable number of GC (commonly in the interval of 3-6 GC), single or all TT and sometime also single RR.
Young wp: The pre-breeding moult is usually less extensive than the post-juvenile moult and includes body and a varying number of LC, MC, inner GC, TT and RR.
Adult SC: The post-breeding moult includes the whole plumage. Rare cases of retained/’forgotten’ feathers are known.
Adult wp: The pre-breeding moult includes body and a varying number of LC, MC, inner GC, TT and RR.
Number of GC included in the post-juvenile moult shown as percentage of 1cy birds at Ottenby 2000-2013 (n=398).
No plumage differences.
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