2 weeks ago we put 20 eggs into an incubator at school but have had very little success from them with only a few still showing signs of life. Today I put another batch of 15 in so that we have more of a chance of the children seeing a duck hatch but it will therefore be a staggered hatch and I've not done this before. Does anyone have any information or advice ? Concerned about the second batch having high humidity for 3 days, Hannah 
