Photo 13: sub-adult or adult LBBG, October 22 2001 Westkapelle, the Netherlands.

On both the old primaries p9 and p10 a mirror is present and therefore adult plumage is very hard excluded. Note that the upper two tertials lack a white tip and the tips on tertial #3 is confined to the inner web. Note the pale yellow legs and the extensive black bill-band.
P7 is slightly longer than p6 but yet not fully grown.