OK, so I know it isn't 100%, but I read somewhere that an australorp can be sexed at 4-6 weeks based on their feathers. Of course I couldn't find pictures showing this for an Australorp. I have two that turned four weeks yesterday. One was very slow to grow for the first two weeks and didn't have tail feather until week three. Well, at least noticeable ones. At week three I could tell she was catching up in size and feathers. Now she has some decent feathers, but when she lays down (which she does a lot) they go straight up. Does this point to rooster? Here are my pictures: Greta, the slow growing runt(?) that now has crazy tail feathers. She is still smaller than the others though. Ethel, the one that grew at the same speed as my other chickens along side my EE Mabel. I figured this was a better comparison picture since Ethel is laying down as well. I'm just an eager mama and concerned since I can't keep a rooster where I live.