Also if you kill a mature doe with a yearling (no spots) the orphan will latch on to the closest doe with other fawns...it may not get to feed off the doe but at least they have some friends...that's just my observation.
Yearlings will stay there and watch you field dress too! That could be a bit alarming for someone if it happens to them. But take comfort in know that the yearling will be perfectly fine. What Wilcam47 posted and I just quoted is true.