Who Really Hides the Eggs?

Is it wrong to tell our children that the Easter Bunny hides eggs? Just wondering if my grown children were harmed by this. I was told there was a bunny, and I'm okay. (No additional comments from the fam on that. Ha!) Would little children believe that the chickens hide the eggs? Well, years ago, when we were raising 500 chickens, some of the hens hid their eggs daily. And no, I didn't feel like it was Easter! I have fourth graders, 9-12 years old, who still believe in the Easter Bunny. I shall not be the one to break the news and ruin their lives.