Is this a pure RIR rooster?

[J-Habs]

Update.... I got him this morning and I'm pleased so far. Right out the gate he was calling the hens over to eat. I have him separated from my Olive Egger because he's tried to kill 3 other roosters in the past, and would have succeeded had I not intervened. Something tells me this RIR isn't afraid of him, as they've kind of gone at it through the fence.