Is this leakage ?

[Windywillow]

Is this Leakage? I have some totally different color hatchlings who are now 8 wks old , they are from my hens , the hens are blue, mauve and bk cuckoos with blue cuckoo roo ( chocolate link )
This buff coloring in two of the cuckoos and then this gray and buff looking one who isn’t a cuckoo ( no barring) along with this partridge! No buff or partridges in the mama hens is it a buff gene coming out or leakage?

 

[Debbie292d]

Boy it sure looks like it and they are just gorgeous! I've had partridge leakage but never had a partridge.

I'll be in your predicament in the fall when the cuckoos I've got are adults.