This (near?) adult LBBG-type was photographed in East Houston, Harris County, Texas on Feb 02, 2006; note P10 is still growing; P9 is not quite fully-grown (thus P8 is longest primary) and has a vestigal mirror; on P5 the subterminal black is very short along the outer web for LBBG; P5 and P6 have well-developed white crescents inside of the black subterminal area, and P7 has a suggestion of a similar crescent; P4 has a subterminal black nick on the outer web; the only sign of possible immaturity in the rest of the plumage is a few brown crescents in the outer underwing coverts (black in the bill is a regular feature of winter fully-adult LBBGs); also note that the tail tip falls under the tip of P6:
