Thoughts on my 8 week old Japanese Bantam?

[Quaicken108]

My little jap bantams are 8 weeks old. The black one has a slightly larger comb than the other two I have (not pictured) but it's not bright red and no waddle development. Is this a female or a late developing male?

Photo of its "brother" hatched hours apart, same breed and quite obviously a cockerel... for comparison.

Thoughts?

View attachment 2421668View attachment 2421670View attachment 2421671View attachment 2421673

Thoughts you say... Very cute! Also a Pullet!