Cow stanchion apparatus having a fixed support structure that carries a plurality of pairs of like double release stanchion bars which simultaneously swing towards and away from one another to control movement of cattle relative to such apparatus. The stanchion release bars are disposed in the path of vertically movable flaps which lock and unlock the stanchion release bars for relative swinging movement. The flaps are operatively connected to a positioner rod that is manipulated by a dairyman.