OH NO! How are you all so sure that all the barred ones are cockerels? Is it the combs/comb colour? And why the one have a black head spot, if it is a rooster?
As for the yellow chicks, are you all just going by comb colour/size or is there anything else that catches your eye?
A bit unrelated, but when do people usually put the chicks with the rest of their chickens?
The "autosexing" doesn't work if they're mixed.