My friend has had house chickens for about 30 generally bantams - mostly silkies. She has had 2 serama hens and a silkie hen. The silkie was the last to join and the seramas didn't like her at all. one of the seramas has passed at 5 yrs. of age or so, so things have quieted down.
I do believe if the birds were raised together - they would have gotten along much better.