Photo 2: adult LBBG, June 16 2001, Dintelhaven
Maasvlakte, the Netherlands.
An adult, died this week in the colony at the Maasvlakte, the Netherlands. Outer primary pattern as can be found in many LBBGs:
Note the primary coverts, with a black centre
along the shaft at the inner web.
Note the inner, oldest primaries: already turning slightly brown. The secondaries are moulted after replacement of the first few inner primaries, these grey secondaries are much fresher than the inner primaries.
By mid-June, many adults have completely old retained remiges and rectrices.