Turdus merula

Common Blackbird / Koltrast

Main author:
Magnus Hellström, November 2014.

Ottenby Bird Observatory. 2015. Ringers' DigiGuide - Turdus merula. 
                      Adult          Young
SC               sp
winter            -                   -
Young sp: The post-juvenile moult includes the body, LC, MC and inner GC (>90% of our birds at Ottenby have included 4-8 inner GC in the moult). In rare cases (c. 1% of our birds) all GC are moulted. A few birds include single or several RR and/or tertials (and occasionally also inner SS).
Adult SC: The post-breeding moult includes the whole plumage.
Number of GC included in the post-juvenile moult shown as percentage of 1cy birds at Ottenby 2000-2013 (n=1147).
[The symbol + is used for birds showing irregular moult sequence.]
[Two categories of birds were excluded: 1) Birds that had not yet conducted the moult of the GC, and 2) birds where the assessment of the moult was deemed as less certain.]


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