This is so sad. Two deaths and the loss of a calf represents a significant loss. Was the cow found close to your house? This being hunting season I would be worried about new hunters especially taking shots in excitement and hitting something that wasn't the intended target.
We have an 80 acre summer lease for the cattle. One side of the property is a road, the other is a river. The two neighbors are a long ways off from where she was found. I have no doubt somebody shot her, but with a .22.
Do you get outside hunters coming to hunt the lands around you? On our homestead we had a fairly large wood lot and hunters for the city would come and ask permission to hunt. Others just trespassed and it became a dangerous situation if some of these guys coming within 100 yards of the house. Some people are responsible hunters. Others not so.
I'm sure they do. This property is about 15 minutes from the homestead.