Do birds sometimes fly into trees?

Many birds fly against window panes because they look completely different than we do. When we look at a water from above, the sky is reflected in our eyes on the surface of the water. We can’t see into the water. Birds look completely different. For many birds there is no reflection of the sky on the water surface. They can simply see into the water and recognize the fish in it, as if they were under water. They can also see through window panes from the outside, as we can see from the inside to the outside. For many birds the glass pane does not exist and so they try to fly through a house when they can see through two windows lying one behind the other and see the light on the other. Many birds regularly bang against the window panes and get fatal.

Trees and branches are different. They belong to their habitat and when a bird lives in the forest, he rarely flies against the trunk or branches of a tree. It happens that he’s devastating or that he can’t react quickly enough to escape. But normally, it doesn’t happen. For example, a Habicht has more than one meter span. This bird is able to fly even at maximum speed between two trees that are only 20 cm apart. At the right moment, he folds his wings together and flies like a bullet through the bottleneck. Right after that, he opens the wings again and continues to fly normally. So he can fly through the forest with full gas and doesn’t hit anyone. This is due to the much higher reaction rate of the birds. While our received stimuli are only processed by the brain before we can carry out a reaction, a bird governs without processing in the brain. He flies “automatically.”