In the daycare,if you give both parents that have same nature Everstone is it guranteed to have a baby with that nature?

Question

I have a Timid Vulpix (female) and I want to breed it with an another Timid nature Pokemon that has Energy Ball.if I give both of them the Everstone will it guarantee a Timid Vulpix with Energy Ball? or does every Everstone affect it singularly

Answer 1

It is guaranteed that if you only give the female an everstone you will get what you expected.

Answer 2

I once tried that with two admant pokemon and the egg always had a nature that wasnt adamant. I probably tried about 10 eggs

Comments

Same for me, that's strange.......