My silkie hen is sitting on some bantam east indian ducks, they'll be 28 days Monday morning, so halfway through day 25. Well, I heard them cheep today, and I checked them tonight when locking hens away and two of the three have got a small crack. They can't be hatching already can they? Or could it just be movement causing the crack? They were active, I could feel the egg moving and I can here faint fast tapping when I listen closely. I must sit on my hands now! Wendy