It's true, we are seponcible for sustaining infrastructure feeding us and giving us life. But also for the nature, which is life to everyone. I disagree that fensing is the issue. "Fensing" with bullets is. Usually, it's the military men and well, politicians, who are culpable for the demise of our little relatives. They own and ran jointly swaths of land where they are free to do harm as they please. And, I suspect, that is what author has in mind when he speaks of "fensing". Nowhere does one speak on it as does Tengis Aitmatov, an Soviet writer, in his roman "Crusible". Hashem save our Earth, for we don't know what we are doing.
Death toll from Iraq car bombs rises to 37 (Reuters)
from the article: Wildlife habitat in the Judean Hills being throttled by fences