photo 2564: LBBG graellsii sub-adult, April 13 2004, Maasvlakte, the Netherlands (51.59N,04.02E). 

Freshly killed sub-adult LBBG in the colony, died today. The primaries show black on the inner primaries as well P1-P10 with black) and all secondaries have black central markings. The tail is white.

Bill with obvious black band and black along the culmen.
Size: head + bill: 122,5 mm.
Height at gonys: 17,7 mm.
Bill-tip to feathering: 41,5 mm.

Leg from feathering minus nail: 135,2 mm.
Middle-toe + nail: 60,3 mm.
Knee to middle-nail: 120,9 mm.
Tail 200 mm.

For another dead sub-adult (4cy) LBBG in April 2004, look HERE.