What age is best for telling the breeds of the chicks?

[Sweetlilbaby]

Mine are 8 days old. They were supposed to be silkies but they are not! I recently was given 3 dozen silkie eggs and they are much smaller eggs then what these chicks came from.
these are from 5 white eggs, and one deep dark brown egg. The orangish chick is from the dark brown egg. 2 white ones have feathered legs. In the second pic the one from the brown egg is laying down.

 

[sunny & the 5 egg layers]

They are definitaly not silkies. The brown one from the brown egg looks to be a production red. The white ones, I'm not too sure of.

 

[Sweetlilbaby]

Production reds come from really deep dark brown eggs? The egg was a chocolate brown.

 

[drpurl]

I do not know enought about that kind but cute chicks!

 

[Sweetlilbaby]

Thanks. I don't know much about breeds. I am use to having RIRs and leghorns (along with a few random breeds). I'm not sure what these chicks are but I hope that the one from the dark brown egg is a hen. I'd love dark brown eggs. I'm pretty sure my white ones are leghorn mix's. But it's just throwing me off with two red chicks looking alike but one came from a white egg, and one from a dark brown egg.