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Yes, I think you do have a male there. That's a pretty clear crow.
And as he moves around in the video, I see that his comb is larger than I had realized in the still photos. At first the color was mixing me up (because I expect cockerels to have red combs by the time they crow), but then I...
If the chick is really crowing at age 8 weeks, then it's definitely a male.
From the appearance, I might have thought that bird was a female
You could try to get a video of the crowing, if you want someone to double-check.
Sometimes pullets make sounds that get mistaken for crowing, like in...