Hi. I have 3 black jersey giant hens that I got last spring I also have a pair of Muscovy ducks and 7 black silkies and 6 red sex link chicks. My problem is this.. One of my bjg's decided that she wants to steal the ducks eggs. I have found a new chicken on the duck eggs every day for the past week I even chased my cat off of them a time or 2. I really want to hatch these eggs and I want to hatch some silkies too but can I put chicken and duck eggs together under the same hen? If the chicks hatch at 21 days will she stay until the ducks hatch at 35 or will she abandon them? Has anyone every tried hatching chicken and ducks together?