Feather-tips on head turning white on 14 week old chickens

[ChickenMasta1105]

Hi! My 14-15 week old chickens heads' feathers' tips are turning white. Literally all of them. The cockerels, and pullets, all four of them. All are behaving normally, eating and drinking normally, everything is normal. Also, all of them are Production Reds. Any help?

 

[Sablehaven]

Could you post an upclose picture? It may just be molting, but we'll need to see it.