Photo 2: LBBG 3cy, June 17 2001, Missouriweg, Maasvlakte, the Netherlands. 

Second summer (3cy) LBBGs normally show a grey saddle formed by mantle and scapulars. Some of the coverts are moulted to 3^rd generation, but most still contrast with the grey saddle. Sometimes the entire median covert row is replaced, creating a grey bar. Also, inner greater and inner lessers may be replaced and sometimes there is a distinct difference in grey tone. On average in June, moult is in progress in the tertials, a few being replaced, a few still brown, 2^nd generation.
The 2^nd generation abraded coverts are pale brown-white barred, the fringes are worn away. Intermedius type LBBGs may show plain old abraded coverts and very dark grey new feathers.
There seems to be only small variation in this age class, but tail feathers can show distinct differences: it might be anything from a clear tail-band, spaghetti pattern, black-and-white variegated patterns to a snow white tail.
June 16-17 2001, most 2cy LBBGs moult the inner primaries. Normally p1 up to p4 is missing; it may be advanced and sometimes p1 or even p2 is already visible. The outer primaries are clearly old 2^nd generation feathers, without tips and no mirror on p10.
Some winter streaking may still be visible in the lower neck, but often the under parts, neck and head are clean white.
The iris (yellow or brown), bill (extension black variable) and legs (pale yellow, pinkish, bright yellow) show some variation in this age class. Here, note the dark iris.