Very helpful, and I will take on board this advice for next time. So many sites suggest a high humidity for ducklings, but mine developed small air sacs, and drowned late in the shell....so this guide should help me lots next time. You could perhaps show a diagram for Muscovy eggs, as they develop more slowly than other duck eggs, so your air sac drawings are a little misleading when it comes to Muscovys. Otherwise a really good guide. Thanks again
