Turdus pilaris

Fieldfare / Björktrast

Main author:
Magnus Hellström, December 2014.

Citation: 
Ottenby Bird Observatory. 2015. Ringers' DigiGuide - Turdus pilaris. 
www.ringersdigiguide.ottenby.se
 
MOULT:
                      Adult          Young
summer        
SC               sp
winter            -                   -
Young sp: The post-juvenile moult includes the body, LC, MC and inner GC (92% of our birds at Ottenby have included 3-7 inner GC in the moult). A few birds include single tertials. According to Jenni & Winkler (1994) R1 may rarely be included.
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=48).
[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.]
AGE:

Autumn
Spring
SEX:

Autumn and spring
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