栖于树木的

例句：

1. 1. The bird nestled comfortably in the tree.
   那只鸟舒适地栖息在树上。
2. 2. The baby bird is learning to fly by building its own nest.
   这只小鸟正在学习飞行，自己搭建巢穴。
3. 3. The old woman built a small nest for her pet cat.
   那位老妇人为她的宠物猫搭建了一个小巢。