I have a large supply of rogue elm.
I toss a few branches in for dessert. after their regular feed.
I kinda spoil them.
after 3 weeks they are almost not afraid of me. they associate me with the food bucket.
and I rescued lil bit from her encounter with a chicken cage...
I'm going to build them a hill using your kugeldunker thing. they love to get up onto anything tall.