Herring Gull C044U 2cy (argentatus), August 09 2002, Tampere, Finland (61.31N,23.43E).

A 2cy argentatus, ringed orange C044U as pullus on July 06 2001 in Tampere, Finland (61.31N,23.43E). The complete moult is well underway with most wing-coverts and the inner primaries moulted to second generation. All juvenile primary have been dropped. P1-P7 are fully grown second generation flight-feathers and P8 is already reaching at the length of P6.
The tertials and most of the wing-coverts are replaced for second generation feathers. The only wing-covert still to be replaced are the lesser coverts, of which most feathers are still missing. All scapulars have been replaced by second generation feathers, including the scapulars in the lowest row. The upper scapulars were replaced long ago and look abraded already. A few new third generation scapulars are moulted in in the lower upper scapular row.

By August, the warm brown tones of the first moulted wing-coverts (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 central greater coverts. However, some argentatus are distinct "washed out" brown, showing 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 this individual, the upper tertial is very worn and will probably be dropped soon.

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