I had 20 eggs for hatching with only 1 success. I left all but 3 eggs in the bator throughout the 21 day process. The 3 that I took out were undeveloped and inside it was watery and bubbly. So tonight I gave up and opened them up. Here's what I found: 1. 5 Barred Hollands - all undeveloped - liquidly w/yolk 2. 5 Easter Eggers - all developed (one a bit less) and all dead 3. 8 Marans - 5 undeveloped - liquidly w/yolk, 3 developed, 2 of them died with only 1 hatch and it's healthy So it looks like 50% were not viable to begin with, but 2 Marans and 4 of 5 Easter Eggers were fully developed. What causes this? Was it something that was wrong near the last day or two? I am reading written material on this, but know that you folks do this all the time and have invaluable experience. thanks for any insight.