I'm glad others posted as I have no personal experience with mixing breeds.
One thing I know I've read from others is there's safety in numbers, so I wouldn't just get a couple of silkies, I'd get about a half dozen or more of them so if they don't blend too well, they have their own little clan that can wander around together. At night, I doubt there'd be an issue, but when they wake up if they are locked in together for a while, then there could be.
If you get the pet quality, those are usually not vaulted or have crests instead of so poofy, and no eye problems.
The fancier ones I do occasionally trim around their eyes. We used to use kitchen scissors but hubby came up with the greatest thing that works and they love it, his electric razor.
No, their feathered feet don't cause a problem. In fact, they insulate their toes in the winter so they can walk on snow/ice better.
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Here is a satin silkie hen that's crested.
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Here's a pet quality momma hen we started with. Her poofy head wasn't so poofy so she never needed trimming.
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The "pet quality" as you can see are beautiful too, just not as stunning as our fancier, show-quality ones like Marsha, who does need her eyes trimmed every few months.
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