Thank you for the very informative and helpful post.
A little bit of science for you because people can get a little confused about mules, ligers, etc.:
Ducks have 80 chromosomes
Chickens have 78 chromosomes
When their DNA (chromosomes) are being made in the egg, think of each one as one side of a zipper. When you zip up each side (80,78), they don’t match up. So you have an uneven zipper. I use this example because when DNA is forming in an embryo, it literally looks like a zipper. This means a baby will not form. I know this site is read a lot by people surfing the internet for answers, so I don’t want someone to get the impression they can try mating these two together and get offspring from them.
That being said, if you have more questions along the way please ask! Someone on here is bound to know the answer!