Yes, I have white&buff silkies with my ducks&standard chickens. They roam around, eat, drink, & sleep together. No problem. There is even a younger buff silkie&guinea in there with them too.
My other standard chickens come from their coop & hangs out with them too!
Also, I have three baby white silkies&two baby ducks brooding together.
Hope this helps!
Silkies and standards work best when they're raised together from chicks. If you get good quality Silkies with big crests they can't see worth a darn, which makes them a prime target for butt whippings.
If you must introduce grown birds give the Silkies crests a good trim and supervise VERY carefully.
Nikki