what breed are these chickens

[jojoncandie]

can somebody help me figure out the breed of these chickens. the white and black ones i have no idea of what they could be

 

[Masonicflock]

Favors an Exchequer Leghorn..

 

[ramirezframing]

not a leghorn as they dont have yellow shanks or white earlobes

 

[FFChickens]

Maybe a mixed?

 

[jojoncandie]

i was thinking mixed but i was trying to narrow down maybe what breeds could be mixed in..they are excellent layers and often go broody. the rooster is very proud and territorial to others. not a agressive breed when it comes to humans very docile. they have hatched out so many chicks and not one has had any other variations to colors...they are staying true to the white and black