What Sex is my silkie

[bantiemomma7]

I have 4 silkies. They’re all around 7 weeks old. I know they’re suppose to be hard to sex but hoping maybe someone has an idea. I know it’s hard to see in these pictures. The white one (JJ) is bigger than the rest but very sweet. He/she lets me hold and pet them! The black one (Black Betty) is this same. She’s very sweet and usually stays close to the ground and usually doesn’t raise her head up to often. Both the grey ones (BamBam and Pebbles) don’t like being messed with and just kinda stick with each other.

 

[cleoandtheflock]

JJ looks like a pullet and Black Betty also looks like a pullet and so does one of the grey ones but the other gray one on the left in the first picture looks like a cockerel