Can you sex chicks by rubbing them and knowing when they shake or not?

[Nenad]

I actually tried it with my 5 week old pullets. Six, all females. 4 shook their feathers back into place and 2 didn’t. It doesn’t mean they’re males - they’re sexed females with no male development. But they didn’t feel like shaking themselves off.
So I definitely believe this is inaccurate.

You are probably right, if you want try it with them couple of times and see is it is always 4-2. For mine its always 1-2. I will update on mine when Im sure which ones are cockerel and witch ones are pullets.