Yes I heard some of them do that! Don't know which ones though.. It just comes from the general area. LOLMy wife always sys that the ones with white dots on the outside of the eyes are cockerels. Off course that is how I end up with my best cockerels having names like Lacy and Ginger.
Have you listened for trills? I also heard that some people can tell the Pullets from the cockersl that way. The vocal trillers being the boys. Hmmm...I hate the period when you have to sit around and guess what they are.