Motacilla alba

White Wagtail / Sädesärla

Main author:
Magnus Hellström, September 2014.

Supplemented by: Gabriel Norevik, September 2014.
Citation: 
Ottenby Bird Observatory. 2015. Ringers DigiGuide - Motacilla alba. 
www.ringersdigiguide.ottenby.se
 
MOULT:
                      Adult          Young
summer        
SC               sp
winter            wp               wp
Young sp: The post-juvenile moult includes most of body, LC, MC, a very variable number of GC (often 2-8, but range include 0-10, although the extremes are rather rare) and no, some or all tertials and RR (often only R1 and R6). A few may also include inner SS. In c. 20% of the birds, the moult of GC does not follow the regular order sequence.
Young wp: The pre-breeding moult includes body, none or some LC, none to all MC, usually 3-8 GC, none to all tertials and 0-4 RR (often only R1 and R6).
Adult SC: The post-breeding moult includes the complete plumage. 
Adult wp: The pre-breeding moult includes body, none or some LC, none to all MC, usually 3-8 GC, none to all tertials and 0-4 RR (often only R1 and R6).
Number of GC included in the post-juvenile moult shown as percentage of 1cy birds at Ottenby 2011-2013 (n=294).
[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.]
Number of GC included in the pre-breeding moult shown as percentage of 2cy and 3cy+ birds at Ottenby 2011-2013 (n=18).
[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
Spring
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