I've learned over the years that usually, you don't want to see red in the face of a 7 week old chick, typically it's a boy. But... it can vary. I had this little rose comb chicken, D'Anver mix. She bloomed up a red comb early, and I thought for sure it was going to crow at some point. I got an egg instead.
Sometimes I can tell by the comb on hatch day, or even when it's pipped and I can see a comb on it, sometimes I can tell then if it's a boy or girl. Others I have to wait and see what colors come in, if I know what to expect for the breed. But generally... you don't want that amount of red on a 7 week old baby, it usually means male. But there are some, both male and female, that will throw you for a loop.
But... that's not the case here. There are at least 3 boys in that mix. I don't know Brahmas that well though, so I could be wrong. But the Cochin is a boy for sure. The Silkie mix... I'm 50/50 on.
Looking again at the Brahmas... the buff one might actually be a female, but the last one is a boy.
Ok, my final answer...
Girl (maybe)
Dunno
Boy
Boy
