Honestly, I understand your circumstances, but any guesses this young would be a coin toss. Comb width, which many people use to judge, is not reliable at all. Keep the ones you like the best. 

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The best thing to do would be to get a DNA testI know... i just have to have some guesses
This would be the only definite way to know, test turn around time is at least 2 weeks after they receive the samples from what I've seen. I have 17 silkie and silkie mixes I'm trying to figure out the sex of, and I think I'm going to spring for testing of our favorite birds.The best thing to do would be to get a DNA test
Definitely, the boys seem to start it thoughI have DNA tested many silkies. Takes a lot of stress out of the picture. Girls chest bump too, though not as much as boys.![]()
Some of my other breeds are chest bumping, and OF COURSE those are my favoritesThis would be the only definite way to know, test turn around time is at least 2 weeks after they receive the samples from what I've seen. I have 17 silkie and silkie mixes I'm trying to figure out the sex of, and I think I'm going to spring for testing of our favorite birds.
I'm surprised you're not seeing cheat bumping, so far I've only picked Silkie cockerels and they've all been chest bumping, strutting things from the 2nd week on.
Yes, one of my polishes that I know is female, she loves picking fights with the big maransI have DNA tested many silkies. Takes a lot of stress out of the picture. Girls chest bump too, though not as much as boys.![]()