I am sure this has been asked on here a millions times before, but here goes again.
I have two chicks, one a barnevelder and one a black silkie. I can't remember exactly when they were hatched (bought a new academic year calendar and stupidly forgot to transfer lots of useful stuff from the old one), but I think they are around 8 - 10 weeks old. They are the only ones of those breeds I have, as they were bought as hatching eggs, so I have nothing to compare them to.
Can anyone give me a clue as to how I would tell if they are male or female, please?