I suspect that "any combination of" means the seller has a flock with those breeds running together which results in mostly crossbreeds. How important is it to you to know exactly what is in the mix for each? If you NEED to know, you'll need to get better photos and ask the seller for more information about the breeds they have. For example, Cochins come in a wide variety of plumage colors/patterns so "Cochin" isn't nearly as helpful as "partridge Cochin". Make sense?