So one of my chickens turned broody and decided to sit on our ducks fertilized eggs. She had 4. I didn't really think they would make it, but was going to let her try. I've been candling them and all 4 had babies growing and at the same stage. I went out yesterday to candle them and it looks like they are hatching! One of them had a little hole in the end and the other seemed to have a lot of the shell almost 'crushed' in but it is still covered by a white membrane. The other two have no holes but now have cracks on them, one especially close to being an actual hole. The eggs move every once in a while, and on the one with the white membrane I can see something moving inside. My chicken is still sitting on them, so I can't see the eggs unless she gets off (for food). What do I do???? I honestly didn't think any would survive and now all 4 are! Do I help? Do I do anything? Or will my chicken know what to do?