A deer tail decoy has a first triangular-shaped flap folded over a second flap. The inner faces of the first and second flaps comprise a material of a lighter color that contrasts with the outer faces of the first and second flaps. A tell-tale flap is integral with or joined to at least the inner face of the first flap. The decoy is removably mounted to an upright, such as a tree trunk. A pull cord is linked or removably joined at or near the pointed tip at the bottom of the first flap. Tugging motion on the pull cord causes the first flap to pivot upward to expose the inner faces of the first and second flaps and the tell-tale flap. In this open configuration, the deer tail decoy resembles the upward tail of a doe, and the tell-tale flap has loose edges that flutter and may be seen at angles offset from straight on view.