These are both supposed to be amberlink!! One is pure white and one is buff with white... They're 4 weeks old. I'm now getting worried that one's a boy

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is the darker one a roo?
Too young.View attachment 2127030
These are both supposed to be amberlink!! One is pure white and one is buff with white... They're 4 weeks old. I'm now getting worried that one's a boy![]()
Darker one would be female.View attachment 2129152
Please could somebody help shed some light on these. As chicks they looked identical...is the darker one a roo?