This isn't about water in a drought, or oil in Alaska, this is about an immature spoiled brat, upset about the song of a bird. In his childish little mind he likely felt pleased, with a chance to show how "macho" he is. Problem is, he isn't, he is pitiful.
I have an ex brother in law like this idiot. He saw one of the horses hogging sweet feed from another horse's bucket. The damned fool ran up and hit the horse in the rump with a plastic bucket, the horse kicked his arse half way across the pasture. He got up, pulled his pistol, going to shoot the horse. I told him to go ahead, but I'd bury him under the horse. Best thing that happened is my sister divorced the idiot. He killed every Indigo snake and Black Racer on my land, and bragged about killing "Moccasins".
I'm no liberal, I'm not sure where your attitude comes from, however. Conservatives respect life.
If he has violated his covenant of steward of the creatures of the Earth (being human) then God will take it up with him. As it is, a bird is dead by his hand and nothing and no one on Earth is harmed by it except the feelings of those who have bought into the liberal programing. 