I have 2 duckling that were born June 22nd (1 is female and 1 is a drake)and I found an egg. They are half Pekin and half Mallard and mom is Pekin about 8yrs,..??? Don't know but I was feeding her at the college pond for 5yrs until she got attacked while sitting on her nest and some of her eggs were destroyed so I brought her and her nest home and I birthed 2 ducklings myself and they are imprinted on me and they currently on my back porch so when I was cleaning while they were outside I found a egg. Probably not fertile,..correct???