Gender of baby chicks... by holding them?

[mmizell]

While at my local feed store an employee that was some what into chicks, was showing someone out of the St. Runs which was a pullet.. He would hold them legs hanging down, if they relaxed their legs, he called them a pullet.. Is this a method other go by?
Melinda

 

[OCchickens]

I saw a thread about this a few weeks ago & it seemed like the consensus was it's not reliable.