I have received this question re duck eggs cracking in incubator on day 10 and 15.
"my duck eggs have crack in incubation 1 on the 10th day so and and 2ed one on the 15th day I not olny got one left can you tell me what i have not done right? James"
I thought the reason could be temperature too hign and humidity too low, or the eggs may have been cracked from the start but the crack was not visible.
Anyone have any advice?
Sara @ farmingfriends