Yes- the black one is a hen and her deep red color indicates that she is laying. I agree with her being a Black Orpington. The others are also hens, one looks like a Black-Sex Link and the other possibly a RIR, though it looks a bit light in color.
The white hen looks like she is quite a bit younger then the others. Could be a Leghorn, but I think their combs are very pronounced even at a young age. White Rock? I don't know if they are commen in your area. I don't have much experience with Leghorns so I'm just guessing.
Nice look'in gals though. Add a Buff Orpington and a Light Sussex and you will have a nice little flock
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The white hen looks like she is quite a bit younger then the others. Could be a Leghorn, but I think their combs are very pronounced even at a young age. White Rock? I don't know if they are commen in your area. I don't have much experience with Leghorns so I'm just guessing.
Nice look'in gals though. Add a Buff Orpington and a Light Sussex and you will have a nice little flock