Pullet or Cockerel

[Curious Owl]

Can someone help me identify if this silkie is a pullet or a cockerel. About 12-13 week old. Thanks

 

[nuthatched]

I vote cockerel, unless it's older than 15 weeks

 

[WhatsUpDuck]

I vote roo, but I'm still learning

 

[Fluffy_Butt_Hutt]

I'm curious to what looks like a nose bubble in the second picture, is he okay?