yea, they nest on the ground,
but you need to place them in a low place, so that they cant fly up.
if they can fly up about 2 feet the will roll.
so keep them in a low place,
you dont need anything to make them roll, you just have to give them plenty of rest and shake them, when you shake them, release them low, they will roll for you.
they can fly about 2 feet high,
but thats just mines,
i have heard that they can fly up to a perch about 5 feet high.
but i havent seen one.
hope this answers your question.
but you need to place them in a low place, so that they cant fly up.
if they can fly up about 2 feet the will roll.
so keep them in a low place,
you dont need anything to make them roll, you just have to give them plenty of rest and shake them, when you shake them, release them low, they will roll for you.
they can fly about 2 feet high,
but thats just mines,
i have heard that they can fly up to a perch about 5 feet high.
but i havent seen one.
hope this answers your question.