Desert Mistletoe, also called Mesquite Mistletoe (Phoradendron californicum).  The plant is hemiparasitic, meaning it does some of its own photosynthesis.  According to Wikipedia, the white to reddish fruits are edible if growing on mesquite, ironwood or catclaw.  The Phainopepla (Phainopepla nitens) eats the fruits but excretes the seeds, thus helping to spread the plant.  See: Glenn E. Walsberg.  1974.  "Digestive adaptations of Phainopeple Nitens associated with the eating of mistletoe berries."  The Condor, no 77,‎ 1975, p. 169-174. [PDF]
Desert Mistletoe seeds after going through a Phainopepla.