My friend has a 400 egg incubator and hatched Ameraucana eggs for me that I ordered from ebay. At the same time she was hatching eggs for herself and another friend. She put blue dots with sharpie on mine as they hatched. Mine hatched a few days before the other ones she said. I have three yellow/gray chicks iwth bright yellow feathered legs. I do not think they are Ameraucana. it is possible that they are blue marans.

Here's some of the other chicks including the yellow/gray ones on bottom left and right

Here's some of the other chicks including the yellow/gray ones on bottom left and right