Hen or rooster?

[Toothpick]

Is the RIR your only roo?

Yes. For now. Will be adding more hens so might keep a roster too.

Nope.... you only would get that result with the red over the white.
Black sex links are created with a red rooster over a barred hen, like a barred rock. BR hens only carry one copy of the barring gene and can only pass it on to their sons. Thus, the females will be all black at hatch, and the males will have a white head spot indicative of the barring gene.

So confusing! But it’s useful to learn this stuff. Thanks!

 

[Toothpick]

Here’s some chicks from the RIR rooster, Delaware, Black Australop, and RIR hens.

 

[Frazzemrat1]

In the future, I'd keep track of the eggs coming from your Delaware, since once they hatch and dry out, you will be able to figure out the boys from the girls quickly.

Keep in mind, you can't breed sex links to sex links and get a sex linked chick. It only works on the first generation. That's why they're considered a hybrid or a mix, because you can't breed them together and have consistent results.