My mom has had success with this for years. My silkie went broody for the first time last month, and I tried putting 2 chicks with her but she hadn't been broody enough, so I gave up. She was still broody after 4 weeks, so I tried again with 1 2 day old salmon favorelles chick that I put under her in the middle of the night in her broody spot (the egg box of all places) and she took it just fine. I moved them that next evening to a large dog crate in the house because mynon-broody barred rock was trying to take the chick. They have been a happy little family for a week now. (as for the other two chicks, they are in a different plastic tub in the house as well.) Good luck. Just don't move her from her original broody spot until after putting the chicks with her late at night. Try not to disturb her too much when you place them. Use very little light, and do one at a time. It should work out just fine.