Herring Gull 2cy (argentatus), August 07 2002, Tampere, Finland (61.31N,23.43E).

A rather typical 2cy argentatus from Finland with broad bars on the wing-coverts and lower scapulars. The complete moult is almost finished with most wing-coverts and the inner primaries moulted to second generation. The outermost primary P10 is still juvenile in one wing and P1-P7 are fully grown second generation flight-feathers. The innermost secondaries are still juvenile. Most tail-feathers are second generation now, with the outer rectrices still growing.
The tertials and most of the wing-coverts are replaced for second generation feathers. The last moulted wing-coverts are the outer lesser coverts and the central greater coverts. These feathers have a warm hue on the pale parts. All juvenile scapulars have been replaced for second generation feathers, including the scapulars in the lowest row. The upper scapulars and mantle were replaced long ago and the old second generation feathers look abraded. A few new third generation scapulars are moulted in in the lower upper scapular row. Those feathers show a warm buffish tone on the centres and a neat fringe. A few lower upper scapulars are missing.

By August, the warm brown tones of the first moulted wing-coverts (upper tertials, inner greater coverts and median coverts) are faded to plain white, leaving a contrasting barred pattern on the wing-coverts. On average, 2cy argentatus is more contrastingly patterned than same aged 2cy argenteus, especially regarding the pattern on the inner and central greater coverts and the white belly and flanks. However, some argentatus are distinct "washed out" brown or show the common vermiculated pattern of 2cy argenteus. 
The last moulted coverts are the central greater coverts and outer lesser coverts, replaced by mid-August. From mid-August onwards, 2cy argentatus start the partial autumn moult, starting again to drop the upper tertial and inner greater and median coverts.

In the table below, the primary moult scores of 2cy August argentatus in Finland can be read: