extra large eggs

I have one black jersey giant pullet. She is so adorable. I know professional and hobby farmers who insist on this breed being very robust, very hardy, very docile pets, layers of very very large brown eggs and excellent meat birds. Why are they so rare?

Hello Ya'll! I have a beautiful breeding pair of Pekin Ducks available (one male, one female, obviously... Lol). They are a bonded pair. These ducks were born May of this year, 2017 and I get huge delicious eggs from this girl daily. When checking fertilization, there is a 98% fertility rate...