Forsman plate 216 shows a juvenile Pallid with underside black primary tips and distal barring as per the LV bird. On the other hand plate 220 shows a juvenile with extensively dark primaries without distal barring, so presumably this feature is variable.
In several of his plates of juvenile Pallid, P1 is noticeably shorter than P4, as it is on this individual (Ruy has some photographs showing this).
[ Last edited by hmartin at 7/04/2014 10:14 ]