Black Giant or Black Australorp....and pullets or cockerels?

[thunderchicken21]

Photos of what I believe to be a cockerel

 

[thunderchicken21]

And the one that is circled (assume to be pullet)

 

[BastyPutt]

Pictures are tough with the color, but I'm going with yellow on the cockerel and white on the pullet. So Jersey giant cockerel and australorp pullet. If you can get those two together, and compare their feet, I'd imagine the difference is going to be obvious (no need for pics, unless you want to)

Although they do get substantially bigger, the Jersey giant is a slow developing bird in terms of size. 8 months to a year until you will see them at full power, probably a few months behind your australorp.

 

[thunderchicken21]

Hard to tell from those pictures, but they both looked white to me.

 

[MysteryChicken]

Australorps, they have pink/white feet.