I have 3 birds that are 11 months old. Our sussex passed away about 2 months ago. The wyandotte has been broody for about 3 weeks. I am thinking of slippinga new born under her at night for her to raise. I am concerned about how the other 2 will act. Also 4 is the maximum chickens I can have so I can not do more than one. Is this a good idea?