Egg colors...Penedesenca or Langshan

[Kennedykacklers]

We have one Black Langshan and three Penedesenca hens...both breeds are supposed to lay dark brown eggs. They are just pulleys, coming into laying over last week and this week. How do I tell the difference between the two? Also, what is the difference between a Cochin egg and a Buff Orpington in color? Thanks for everyone's help!

 

[Kennedykacklers]

Oops, that ought to be "pullets", not pulleys!