4 images: 2cy LBBG intermedius NOS 4139760, July 2004, Amsterdam, the Netherlands.
below 2 images: 2cy LBBG intermedius NOS 4139760, July 04 2004, Amsterdam, the Netherlands.
A Norwegian intermedius LBBG, ringed NOS
4139760, present in Amsterdam for most of the summer months. Moult score
advanced, as all scapulars, almost all wing-coverts, tertials and all
tail-feathers were included in the moult at the wintering grounds, about 5
months ago. Note the retained juvenile wing-coverts in the upper row of lesser
coverts.
After returning in NW Europe, the complete moult started and by early July,
P1-P2 are fully grown second generation, P3 is growing, P4-P5 are missing and
P6-P10 are still juvenile. All secondaries are still juvenile as well. Together
with the primary moult, wing-coverts are moulted again, now to third generation
and they involve the typical 'early feathers': second greater covert, inner
median and inner lower lesser coverts and some inner upper lesser coverts. These
feathers were probably moulted first in line in the partial moult last winter.
below: 2cy LBBG intermedius NOS 4139760, July 06 2004, Amsterdam, the Netherlands.
below: 2cy LBBG intermedius NOS 4139760, July 09 2004, Amsterdam, the Netherlands.