During scenes where Winterhawk rides his spotted horse, the horse's tail is tied with a red ribbon. Then the ribbon is gone, then it's back again.
Character Clayanna (actress Dawn Wells) always has on fresh mascara and fresh lipstick, even though she travels for weeks on horseback in the wilderness of Montana, with no luggage and no handbag.
Mallard ducks migrate and would not be swimming in a tiny pond in the snow.
Near the 30 min mark a black hair can be seen on the camera gate in the upper right area.