Yes, noise can be a concern but I disagree with your comment on the need to site turbines 2-3km away from human habitation. I've spent a lot of time up close to turbines under various weather conditions and this is certainly not my experience. I would also like to add that there are all kinds of manmade sounds that already exist in rural areas - road traffic, jets passing overhead etc. that are louder than rotating turbines at shorter distances than you mention. This is another argument that's often used to force wind farms into ever more remote areas. I haven't heard of the impact on cattle that you mention but I've photographed groups of horses at several sites in fields right next to turbines - an even more flighty and sound-sensitive creature.
I agree with your statement on habitat - my article addresses landscape issues only as I believe it to be an under-represented concern.
I'd like to see peer-reviewed evidence that proves property prices are affected by nearby wind farms. Home-owners do have a legitimate right to be concerned. However, I would say that those most strongly opposed to wind farms inadvertently talk down the price of property in their area in the process of justifying their true objections (which are often visual impact). Public sentiment plays an important part in dictating prices...
Personally, I would like to see more community owned wind farms similar to what exists in Germany. The wider community (not just the landowner) owns or partly owns the turbines and they get a direct benefit as a result. We need to bring people and wind farms closer together, not push them further apart.