Should I be worried?

[Danyander]

I keep finding feathers in the pen. They are black. So I know they are coming from my Black sex links which are 6 weeks old.

Thanks

 

[HighStreetCoop]

Nope. That's the just the second juvenile molt. Perfectly normal.

http://www.the-chicken-chick.com/2011/12/molting-what-is-it-and-how-to-manage-it.html