Hi Kfelton0002. Roo#2 if he s a top dog that good .so he can look after him self and his hen s. you will get a better fertility from a dominant Roo.
What egg colour did he hatch from?
To darken the eggs you need to breed a cockerels line bred specifically for dark eggs colour trait .from this line you will pick your future roosters.
I work with a cockerels lines like I said .and I breed a pullets line bred for type, body colour type and eggs production.
when this 2 line are established ( bred true ) than I ll merge the 2 lines to create my line.
good like with your breeding .
Take a lot not and picture ,will help you in the future is a good tool in breeding. Observe your chooks ,watch every move . more you know then better will get in breeding. because you will see they trait passed down to they progeny and you will be able to spot them.
chooks man