And its seriously nerve racking... I had 14, all of which were growing until I screwed up the humidity...Now I have six! Yesterday they were all moving and wiggling around in the shell when I upped the humidity and put them into lock-down, but... No pips yet I am very nervous and have never hatched duck eggs before. Do they usually wait until precisely 28 days? Or will they be late due to my humidity screw up? Any advice? Or should I just chill and have a cup of tea?