My English lab. Smoke, does a good job of finding wounded or dead deer, but I have to watch her, as she won't bark just stands there wagging her tail, if I don't get there quick enough she will come get me and take back to the deer, Rio7
Be thankful for the fact she comes back to get you, its a good response and you didn't have to train it. Barking on site usually also takes some training ( we do it for SAR dogs on live finds) but yours sounds like a natural and an ace at the job.
I have found training a dog to track wounded game is like training a fish to swim...most have a natural propensity to do it, because they evolved that way.
Someone mentioned Border collies...they are great at it and I used my Border Collie X Aussie for a lot of years...she was great..but wouldn't bark on a find either....