Why do birds sleep on branches without falling?

The bird can stand still on the tree, still sleep soundly without ever turning its neck to the ground. This is because the bird's toe structure is very suitable for grasping hard branches. When landing on a tree branch it bends the shin bone and foot bones, then rests on the branch.

The cause of birds sleeping on tree branches does not fall

At this time, the weight of the body is concentrated on the foot bones , the ligament in the back of the foot bone is tight, while pulling the ligament on the foot bone, so the foot bends down, gripping the branches. Therefore, the bird is on the branch of the tree, despite sleeping, thanks to the weight of the body, the tree branch is tightly grasped. When the bird straightens up, the tip of the foot will stretch.

In addition, because the bird's brain grows more than the brain of reptile animals, the cerebral hemisphere has yet to have wrinkles, but its size has increased significantly. The cerebellum is the most developed, the visual lobes are very large, this feature not only adapts to the good flying life but also regulates movement and vision, keeps the body balanced so that the bird stays on the branch. tree.