The yellow ones look to be Buff Orpingtons
The white ones will be White Giants if they have long tails or White Rocks if their tails are shorter and fluffy like the Buffs
The black ones....I can't tell in the photo, but if they have any red interlaced in their feathers (red bleed through) they will be your Black Stars
If all black...then they are your Austrolopes...which is what I am guessing as I am not seeing obvious red bleed through
If they get really big in size, they will be Black Jersey Giants
They also all look to be pullets (the ones with their heads facing the camera or giving a nice profile shot).
Lady of McCamley