I have a cochin bantam roo in with 3 bantam cochin hens, and a RIR bantam hen. All hens share a nest and all eggs look the same. all chicks that have came out so far have heavy foot feathering but this one has very little(almost no) foot feathering.
also if it helps....father is a Partridge cochin bantam. I have two White cochin bantam hens, and one black cochin bantam hen, and the RIR bantam hen. I have two more chicks with foot feathering but they are solid black