We have many sandhills in my neighborhood. They greet you with a raucous of bill clapping in my backyard. I have several families that visit. Some came with two chicks, some with one. They are now almost the size of their parents. Many years ago I had a pair of African crowned cranes that I bought as chicks from a friend. As they grew they would dance around me doing this jump and down thing while flapping their wings. Just an awesome experience.