Need help sexing some silkie chickens

[Just_Clucky84]

Hi,
I have two silkies and I am uncertain of the gender. They are two months old today (Hatched on St. Patricks day!) Any help in figuring out whether I have boys or girls would be greatly appreciated!

White silkie chick







Black silkie chick

 

[Nocila]

Silkies are well known for being difficult to sex (even the best breeders tend to say that you can't be certain until they crow or lay eggs), but I think the first one might be a rooster, based on the redness of the comb. I can't see the black one well enough to feel comfortable saying either way...