Why does a bird sitting on a wire not get electrocuted? 0 7

The current (it is the current that causes the injury) passing through the bird's body is directly proportional to the voltage that occurs between its feet touching the wire. This voltage, in turn, is created by the current flowing through the wire and depends on the resistance of the section of the wire located between the feet.

The length of this section is extremely small, therefore the voltage across it is also negligible, and thus the current passing through the bird is minimal. If the distance between the bird's feet were, for example, one meter, its attempt to land on a high-voltage wire would end tragically.

However, if the bird sitting on the wire touches any grounded object, such as a metal part of a pole, which happens quite often, it will immediately die, as the voltage between the wire (in this case, the bird) and the ground is usually lethal to a living organism.