photo 7022:
Yellow-legged Gull michahellis 2cy,
October 05
2001, Brouwersdam, the Netherlands.
The average moult stage for 2cy October michahellis:
Primary P10 is fully grown and all the secondaries and rectrices are
second generation and complete. Hence, the complete moult has ended. After
this complete moult, a partial moult has included some of the tertials and
wing-coverts.
The inner three greater coverts are fresh, grey based with a brownish tip
and dark arrow-headed markings. The outer median coverts and inner lesser
coverts have been replaced recently as well with similar pattern as the
inner greater coverts. Most of the scapulars are grey.
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