Question about feather pigments

[Kyoto]

I notice that compared to other GCC's, Kyo's flight feathers are really dark at the tends.

They aren't stress bars, more a dark grey that fades into to blue of her flight feathers. Neither of the vets I use were concerned, but I am curious if this is a colour mutation? Or will she molt them out?

I'll try to get a photo tonight when I get home from work.

here is the best I could get

 

[Kyoto]

updated with pic

 

[ZephyrFly]

Pazu's wings are like that. I assumed it was bronzing from getting around and them rubbing on surfaces (he likes to climb around a lot).

I could be wrong though?

 

[Kyoto]

Pazu's wings are like that. I assumed it was bronzing from getting around and them rubbing on surfaces (he likes to climb around a lot).

I could be wrong though?

Thank you for the response.

I'm wondering that too, since the rest of her feathers are coming in beautifully. Hopefully when her flights molt I'll find out for sure.