I have 4, and they pretty much all look the same as far as posture/comb so I’m only posting pics of one. 7 weeks old 2 days ago. I usually do ok at figuring out genders, but since they all look the same it’s proving to be more difficult.
That one looks like a pullet. I have an Ameraucana roo that is about that age, and his comb is bigger and redder. Here are some pics so you can compare