How long does it take for eggs to hatch? My one female started making a nest and sitting on eggs May 16th. Since them more eggs have been laid and I haven't taken them out . Wednesday June 19th she pushed an egg out of the nest and I picked it up. The one side of it had been smashed and I noticed some fluid and blood in it. I gave it to my dog and she finished cracking it and there was a duckling in it. It had the whole form and everything and it was black just like my cauyoga boys.