Cockerel with RED legs, normal? Pics.

[Cee]

My 3 New Hampshire Red cockerels have legs that have changed from yellow to red. They are 5 months old. Is this normal? I should add that their brother in a separate coop still has yellow legs.

 

[Eggcessive]

It is most likely a sign of maturity and fertility.

 

[Cee]

It is most likely a sign of maturity and fertility.

Oh wow, I had no idea. Thank you.