I have a 1 1/2yr white Pekin duck. She lays 1 egg every day. I pick the eggs up every Day along with my chicken eggs because I sell my eggs. Today we decided to eat some of the duck eggs for breakfast, as I cracked them a couple of them were pretty full of blood. They also had a yolk and they were fertilized, by our male Pekin. Can someone give me a clue what is going on here? Thanks!