Need help with this color

[mylilchick]

Can someone please tell me what color this is considered? He's 6 months old. His parents are both Blue Copper Marans. The other roos from this hatch look like dad with copper hackles. Is this a Birchen or silver blue? The last pic are the parents. Thank-you

 

[drumstick diva]

I would just call it Beautiful !

 

[mylilchick]

Thank-you! I thought so too. I have another roo from the same hatch, but his coloring is lighter with no copper. Maybe closer to a blue birchen.