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Eurasian Siskin / Grönsiska
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Main author:
Magnus Hellström, Febryary 2015.
Citation:
Ottenby Bird Observatory. 2015. Ringers' DigiGuide - Carduelis spinus. www.ringersdigiguide.ottenby.se |
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| MOULT: |
Adult Young
summer SC sp*
winter - - |
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Young sp: The post-juvenile moult includes the body, LC, MC, a variable number of GC (93% of our birds at Ottenby included 3-9 GC, but range includes 0-10), 0-3 tertials and often some (sometimes even all) RR. Jenni & Winkler (1994) mentions rare cases with more extensive moult, including PP (perhaps more common in southern populations?). Conversely, a few birds (probably from late broods) may show unmoulted juvenile plumage even during winter, see e.g. Senar (1988).
Adult SC: The post-breeding moult includes the whole plumage. |
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Number of GC included in the post-juvenile moult shown as percentage of 1cy birds at Ottenby 2000-2013 (n=1040).
[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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AGE:
Autumn
Spring |
SEX:
Autumn and spring |
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