Photo 6: LBBG sub-adult, September 17 2001, Vuurtorenvlakte Maasvlakte, the Netherlands.

Probably a 4cy LBBG. Primary moult is a little delayed with only p3 full-grown and p5 still old. Note that the outer primary coverts do not contrast with the brownish old outer primaries. In full adults, the primaries would appear blackish (but may be bleached as well) and the primary covert's original colour would be grey.