Wow, just saw the post above and mine looks just like Spaceship. I must have terrible luck, out of only 3 chicks (supposedly all be pullets) it looks like I got a roo.
Thoughts on the Black Australorp? They are 5 weeks and since 2 weeks I have noticed differences in the BA that led me to suspect she's a he. Much slower to feather and tail looks very different, the comb is also quite a bit bigger now, and s/he just stands differently. First chickens though, so...