Bantam chicks

[Clmirabilio92]

I got these 2 bantam cochin chicks a few weeks ago, straight run, when they were tiny. They are 4 weeks now and getting a little bigger. One is different than the other so I'm pretty sure one is a boy and one is a girl. Can someone help me figure out which is which? Thanks!!

 

[oldhenlikesdogs]

At 4 weeks the second looks male. The first may be too if that comb turns pink in the next week or two.