Question

birds sitting on overhead cables do not electric shock why

Answer 1

Because birds sitting in one cable.
electtic shock provide when posstive and negative is touch .
or not pass the electic by any parts of body.

Answer 2

Birds don't get shocked when they siton electrical wires because they arenot good conductors of electricity. Their cells and tissues do not offer electrons an easier route than the copper wire they're already traveling along. ... For example, electricity flows from areas of high voltage to areas of low voltage.