I'm in Miami right now, and what with traveling yesterday didn't take the time to tell this little story so here goes. I was in my field yesterday morning when I heard a sound down in the bushes that sounded sort of, but not quite, like a dog barking, with commotion of a large animal.
Then a deer came shooting out of the woods, bounding at warp speed from some unseen menace, and it was the deer that was making the barking noise. I went on-line to check out audio of white tailed deer vocalizations, and I didn't find anything like it. More of an "oof oof off" than a dog's bark maybe. Presumably it's an alarm call, so hunters wouldn't want to imitate it, which would explain why I couldn't find a sample.
Oh yeah, in case you didn't know, deer make a lot of vocalizations, connected with mating, buck fighting over mates, mothers calling children, and calling together herds. But they're mostly rather quiet, more like clicks and rumbles than yelps.
For unknown reasons, I'll see deer in groups of any size from solitary animals, to pairs, to herds of a dozen or more. Why they form these fluid groups at times, and at times are alone, I have no idea. Turkeys are the same way, except that the possible size of a turkey flock is unlimited, as far as I know. Once I went down to the field and there were a hundred of them there, wall to wall over a good half an acre. Other times you'll see two or three. Of course you'll see a mother with chicks, and sometimes the mothers pair up so you'll see two of them with all their chicks together. Why? Beats me.