You must first determine the cause of infertility. Your problem may be hatchability. Have you tried hatching duck eggs from another source in the same incubator at the same time? Have you examined the eggs that failed to hatch? There are many reasons to consider before you cull the drake. You may consider a deeper pond as some call ducks can only breed in the water.
I have not read all the past post so forgive me if you have covered these topics.
I have not read all the past post so forgive me if you have covered these topics.
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