I had an older doe around me for about a half hour this morning. I heard her coming, and thought a very young buck was with her. But she was alone. She consistently made this very subtle grunting noise...no not even a grunt...more of a soft clicking/croaking. Like a cross between a small frog and an insect. It lasts a second or two.
She was very relaxed, feeding, scratching, not really looking around much. Just hanging out chewing a bit.
She did it while feeding, while walking, every couple of minutes or so.
I've seen a lot of does in my day at close range, but never heard this.
Those who are more savvy than I....what the heck is this noise?