Help determining sex of Silky

[gpezz]

Hello. I believe I got all males. Any help would be great.

 

[Aunt Angus]

How old? What makes you think they're males? Close ups of each chick's comb would help as would profile pics of them standing.

Silkies are, like, the hardest to sex. I had one I was SURE was a cockerel. Then he laid an egg!