It's intresting that this topic came up. I'm working on my degree in wildlife biology and interning with the MN dnr this summer. Almost 200 fawns were caught and collared this spring, and when one of the collars stops moving, it's my job to go find them and determine the cause of death. yotes have been the biggest culprit by far, with domestic dogs killing a suprising amount. No sign of bear killing any yet. We're still sitting at about an 80% survival rate so far though. As far as older deer go, coyotes don't pose much of a threat unless the deer are hurt, sick, or in very deep snow, and with the mild winters we've been having it hasn't been much of an issue. I can't really speak for any other areas however.