Hey! We're all always learning!
When I was talking about pattern, I was referring to the coloring. Here's an example of 2 EEs I had that looked identical at birth. This is when I knew which one was the cockerel.
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Do you see how the one in front has an even color pattern? Starts with a light head and then gradually gets darker.
The boy (arrow) was very uneven in his coloring then when the rust color started popping up in his wings, it was a confirmation that he was a cockerel. This doesn't work on all breeds but often does with EEs.