While I'm here,... some terrible but ever so slightly informative photos of the tagged Marsh Harrier.
The elusive code, now to find out from whence it came.
During this bird's stay it has undergone the majority of its first 'complete' moult (which isn't complete but anyhoo...). The outer primaries are now whitish below (see the far wing), broadly tipped blackish and greyish above; the primary coverts are also similarly coloured; the moulted secondaries are darker than the new primaries but still obviously grey toned with a paler grey base and contrast with the adjacent, unmoulted juvenile feathers; some secondary coverts have also been replaced but are much closer in appearance to the juvenile coverts and don't catch the eye in the field...
... the new central tail feathers are grey with dark subterminal markings and the outer, still growing, feathers are a rusty brown. All in all, it has transformed itself from relatively difficult to sex juvenile into a fine example of a second calendar-year male,... whoop-di-bleedin'-doo.
PS. There is every possibility this bird will suspend the moult at this stage and retain this look (excepting the effects of abrasion/bleaching) until next summer. Let's hope he hangs around and finds a missus.
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