Posting an update to this to get everyone's opinion. I bought these a little over 6 weeks ago from TSC, so I'm guessing they are about 7 weeks now. I was able to re-home #2 from my earlier post that was definitely a rooster.
Porcelain D'Uccle #1
Porcelain D'Uccle #2
Mille Fleur D'Uccle #1...
I bought these bantam chicks from Tractor Supply exactly 3 weeks ago, so I'm guessing they are 3-4 weeks old. I heard that you can sex D'Uccles at this early age. Here are photos of my 5 D'Uccles and 1 OEG. Let me know what your best guesses are.
Chick #1
Chick #2
Chick #3
Chick #4...