There is no one direct answer for that. I think most farmers actually enjoy seeing some wildlife interacting with their landscape. I think the real issue is when it becomes an issue that goes beyond the economic threshold and they run into severe economic losses.
One of the things that we do see happening is that farmers are starting to look at ways to mitigate that. Richard mentioned the grass waterways. That does create habitat, and it doesn't actually create that much loss. In fact, in the long term, because you can use the equipment more efficiently, you would likely have a net economic benefit.
On our own farm, I've fenced back quite a piece from the water course, and I have geese and ducks and beavers swimming around in there in the summer. By putting that in place, I actually have a water source to draw on for my cattle if I get a dry season.
I think the short answer is that farmers enjoy seeing wildlife habitat, but they do need some programs in place sometimes to make sure they don't suffer huge economic losses.