This is actually a potentially serious problem with deer. Conditions have been well for breeding, and hunting is in the decline in America. This is causing increased deer populations which are devastating local vegetation and causing habitat and food loss for other animals. It's not epidemic (yet) but attention is already going to solving the issue.
While we likely aren't out there supervising and instigating deer mating or the like, due to humanities large presence and vast areas of population most phenomenon can be linked to human action or inaction in some way. Our very presence reduces the amount of grazing land or natural habitat for other animals. But yes, this is not entirely a human caused issue, and there is more at play than simply a lack of hunters. Other predators are in a decline, and other factors come in to play as well.
@guest_ the rise in deer population can be attributed to the lack of predators such as big cats and wolves, which are hunted down by cattle farmers because they're a threat to their livestock.
True. Apologies. My initial post made it sound as though human hunters alone were keeping the deer population down, and didn't include other factors or imply the issue had the degree of complexity it does.
Vegans are illegal now