Here is a link to what LF Silkies look like. It is from a thread I follow.When I think of silkies I think this size below. (large bantam but smaller than a leghorn or other medium breed) Nothing should be different about the new guys..... but perhaps the little one is just a runt. I suspected it got picked on (plucked a bit) and is missing some back feathers. There was never any blood or other signs of severe bullying. Perhaps it's an odd slow, developmental thing.
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https://www.backyardchickens.com/th...-larger-silkie-chickens.1463575/post-24380800
Shore iz a biggun