Bird's home

In a wooded forest, there is a family of birds, where the trees are overcast. Every morning, the little bird's mother and father will fly around to find food. They live a happy life.

One day, a grandfather came to the big forest with a group of people who made money, with an axe, a saw, and a tree-cutting machine. They are madly cutting down the green trees. After a while, the green trees turned into bare roots, and the birds, mothers and dads flew back. They looked down and looked for their home. They saw the grandfather resting on the ground and taking the grandfather's hair as a nest, so they flew down and sat on the top, and the grandfather still didn't know.

Smart children, is the bird really finding his own home?