The method I use for sexing at 1-7 days is wing feather sexing, but that's difficult to do on a Silkie.I would just like to know how to sex silkie chickens of any age? I’m generally curious.
Ages: 3-4 months, males will usually start showing streamers, & a larger comb, maybe some saddling, & some sickles in the tail. Some take as long as 5-6 months to show male traits.
Males of Partridge, will often get red patches in the shoulders, & a red wing triangle.