My older sis' wont eat our duck or chicken eggs!
Only because they're not USDA uproved!(we tricked
her into eating one anyway! Then, she realized the
egg tasted different, but ate it finally.)
Duck eggs are higher in B12 and many minerals. They are also higher in cholesterol.
Some people - not so many from what I can tell - are allergic to duck eggs. Some who are allergic to chicken eggs report that they can eat duck eggs no problem.
I called our state Department of Agriculture and asked about marketing duck eggs. The gentleman explained the state laws that applied, and never once mentioned a problem with people eating duck eggs.
Would your mom listen to someone from a agricultural college or some other "expert?"
She just may have made up her mind, and reasoning won't work. That happens sometimes
Perhaps you can give the eggs to someone who really needs them.
I have a friend who won't eat my duck's eggs because she doesn't want to eat a duckling. I explained about how we have no drake, these aren't fertile. It didn't help. She's stuck.
You can write a story about this (changing names and locations, of course), and in a few years, publish it anonymously - folks might appreciate it!
yummy, great nutrition, best eggs ever! I love them WAY more than chicken eggs, even our home grown ones which are excellent.
some folks just get funny ideas stuck in their heads and no matter how well you counter their complaint, they'll just come up with a new reason. eat them yourself, just maybe don't mention it to her. when you've been eating them for 3 months, and you're still not dead, maybe you can tell her.
but she probably won't eat them anyway. people are funny.