Can you Identify these 4 chickens (more pics.)

[4-H chicken mom]

Okay because everone seems to be going back and forth between Black Australorps and Jersey Giants, here is I think the only way to tell according to my Standard of Perfection. If the feet underneath are yellow, its a Jersey Giant. If theyre not yellow, theyre Black Australorps

 

[4-H chicken mom]

So NJfarmer, Don't leave us hanging. Do your black birds have yellow on the bottom of their feet or not?

 

[NJfarmer]

It is hard for me to check they run away when I get near them. Im going outside now to check

 

[NJfarmer]

The black chickens are austrolorps