I am new to silkies, but I would guess male. My female (probably a female) is pictured above. She has no wattles & a much smaller, flat comb. She's 12.5 weeks.
Hopefully someone with more experience will give their prediction.
6 1/2 weeks silkies
I believe chicks 1&2 may be male. They just look prettier. Chick 3 is DD's fav, so I'm hoping it's a female.
Chick 1: (Click to enlarge)
chick 2:
chick 3:
We actually have 5 silkies. It's not the best pic, but the smaller one on the right is the only one I'm pretty sure is male. His comb is very wide. Chick #2 standing on the left and #1 in back.