Main author: Magnus Hellström, February 2015.
Citation: Ottenby Bird Observatory. 2015. Ringers’ DigiGuide – Phylloscopus trochiloides. www.ringersdigiguide.ottenby.se
Summer sp sp
Winter WC WC
Young sp: The post-juvenile moult is rather restricted and probably only includes the body.
Young WC: The pre-breeding moult includes whole plumage.
Adult sp: The post-breeding moult includes body, but seemingly often also one or more TT and some RR.
Adult WC: The pre-breeding moult includes whole plumage.
No plumage differences.
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