The feather pattern is right. I've got a lot of cochins, and currently have one hen and two roos that are partridge colored- they looked a lot like that as babies. I should note though- a little less likely but very similar in coloring are gold laced cochin chicks. You should be able to tell as the wing feathers come in- if they appear sort of red-and-black horizontal stripes, it's a partridge. If the come in with black edges with a golden color in the center of the feather, you have a gold lace. My bet would be partridge, but cackle does carry both.