AGE – BEST CRITERIA:
Individual differences in wear and moult makes ageing problematic at times. Moult contrasts are often present in alula, tail, TT and inner SS in both age classes, and should be examined carefully. The pre-breeding moult in the GC is restricted – innermost GC may be replaced, but most individuals does not include any GC at all.
2cy May. Inner (small) AL is post-juvenile, showing a darker centre and paler grey tip in contrast to the two worn juvenile longer AL feathers. [CS01849]
2cy May. All three TT are of typical juvenile quality - worn, bleached and frayed. Note that this bird shows a moulted (probably post-juvenile) S6, which both age classes often do. [CS02238]
2cy May showing juvenile (right R1-2), post-juvenile (most of the tail) and pre-breeding (left R1) rectrices with wear typical to the respective generation. Without presence of juvenile feathers the tail would not have helped the ageing. [CS01849]
Ringers’ DigiGuide is sponsored by: