Multiple hair objects (feathers) to one object or connected to rig in other way?

Hi.

I am riggin feathers with this awesome tutorial: https://www.youtube.com/watch?v=_AzUNm9NSPI
But this hairy feathers (extra, not in tutorial) which meaning is to cover a wing, how I would connect those to this rig?

I tried to join CTRL+J these similar like other weathers, but then almost every hair particle disappeared. I tried to Parent all objects with automatic weight, but it was very bad.