AGE – BEST CRITERIA:
Autumn criterias are still applicable, though the still juvenile feathers in 2cy are more affected to wear during the winter than adult. Moult contrast is always present in the wing of 2cy, in the vast majority between post-juvenile GC and juvenile PC (though not always easy to find). Adult birds show a uniform and freshly moulted plumage.
2cy March. One of the rather few individuals showing a moult contrast in GC: Outermost GC1 is juvenile, more worn, less bright blue-grey outer vane and with a smaller pale tip, in contrast to inner post-juvenile ones. [2KR44241]
2cy March. Most 2cy show a uniform set of post-juvenile TT, but exeptions are not uncommon. This birds shows post-juvenile inner and central TT, in contrast to the outer (longest) that is unmoulted juvenile. [2KR44243]
2cy April. Most 2cy (like this one) shows a uniform post-juvenile tail, inseparable from the adult post-breeding. Birds showing contrast between post-juvenile and juvenile RR is not rare however. The latter is recognized by being slightly more worn, often greyer (less blueish-grey), slightly more narrow and pointed at tip. See photo in autumn chapter. [2KR44072]
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