Diademhäher
It is browsed by deer and livestock. Acorns are heavily utilized by livestock, mule deer, feral pigs, rodents, mountain quail, Steller's jay, and woodpeckers. Acorns constitute an average of 50% of the fall and winter diets of western gray squirrel and black-tailed deer during good mast years. Fawn survival rates increase or decrease with the size of the acorn crop.