Could he be a she? (10 week old silkie)

[Cloverr39]

This is Night. He's the sweetest chicken I've ever had. All it takes is for me to sit down for 5 minutes and he jumps on my shoulder.

I've always thought he's a rooster because of his behavior and scrawny looking feathers, especially the tail. His sister (same age) has a way rounder crest, small, round, fluffy tail and overall a more feminine appearance.
The only thing that makes me think is the comb. My other boys have bigger combs at this age. I want to sell him as a cockerel, but what if he's a pullet? 2 of his possible mothers have longer scrawny looking tails too... he's smaller than my other cockerels, but ever so slightly bigger than my pullets.

 

[Chicken poppy]

Silkies are really hard to sex. Not to sure, i would guess male but thats just my vote.

 

[Fluffy Lambs]

Hard to tell I think it's still a pullet. Update in 2 weeks!

 

[Rhodebar Lover]

Looks like a pullet so far to me!

 

[Cloverr39]

So I guess I'll hold off on selling him for now. I will update in about 2 weeks.

 

[Quarterhorses1]

Girl if you ask me! Mine had red combs at that age if they were roosters

 

[Lemon-Drop]

It looks like a pullet to me, although I’m not entirely sure. @MysteryChicken, I know you’re really good at this.

 

[Cloverr39]

OH MY! I just realized I got his age slightly wrong. he's 9 weeks old and not 10 weeks. I accidentally got him mixed up with my other 6 silkies that are a week older.

 

[Chickeroo63]

I have 9 week old silkies and the 2 cockrels have been crowing for about a week now. Not sure if all silkie cockrels crow at the same age.

 

[Cloverr39]

I have 9 week old silkies and the 2 cockrels have been crowing for about a week now. Not sure if all silkie cockrels crow at the same age.

One of my other cockerels started crowing at 8 weeks too. So far he seems to be the only one out of 5.