3 images: LBBGx YLG? adult L 4, April 13 2004, EMO, Maasvlakte, the Netherlands (51.59N,04.02E).

An adult, relatively pale grey compared to other adult LBBG in the colony and with very limited black sub-terminal marking on P5. Note the small medial band on P10 in the top image, another feature not found in adult LBBG.