With a single breeding pair, they can be relocated more easily and the problem removed. To eradicate a colony obviously there are multi breeing pair that consider the place home, making it far more difficult to cure the power interruptions.
There is very little the power co can do to work with this problem based on their instinctive breeding/colonization habits, unlike the eagle/osprey. the gassing is the best and most humane solution.
I understand.
::still pouting::