What gender is this chicken?

[FraFra]

I suppose we'll know for sure in a few weeks or months.

The one with some red feathers is definitely a male (narrow, pointy saddle feathers growing in, right in front of the tail.)

The all black one is either a pullet getting ready to lay (eggs will prove it's a female) or a slow-maturing cockerel (if it grows male saddle feathers, that will prove it's a male.)

Given that they are the same age, and looking at how similar the combs are on them both, and considering that the all black one is crowing, I think it might be a slow-maturing male, but I wouldn't be sure until it grows male feathers or lays an egg.

https://we.tl/t-FekyIVIRUj this is the video where the hen crows

 

[Rhodebar Lover]

Both are slow maturing cockerels.

I agree. Both have male specific feathering