What gender are these 4 mixed chicks

[Poultrybonkers]

I figured but do you know if his going back in forth with super dark red to a pale yellow is normal, my other boy never did this, once he was red he was red so I’m a bit worried

If theres other cockerels around then its normal

 

[Winterland]

If theres other cockerels around then its normal

I didn’t know that!, thank you so much that really lifts a weight of my shoulders