1. The problem statement, all variables and given/known data Birds are often seen perched on a high-voltage powerline. Why aren't the birds electrocuted? 2. Relevant equations V=IR 3. The attempt at a solution The birds usually have their legs very close together so the potential difference between each leg is small. The resistance of birds are high so I is small according to the equation. But would another factor be that the power line has an insulating material around it which would dramatically decrease V.