During the summer Acorn Woodpeckers (Melanerpes formicivorus) have been observed to subsist on foods other than stored dried acorns (MacRoberts 1970), and reasons for this seasonal dietary shift correlate strongly with the need of the young for high-protein food (Koenig et al. 2008). This species has been documented to consume a variety of foods in addition to acorns, including sap (MacRoberts 1970), oak catkins, fruit, annual grains (MacRoberts and MacRoberts 1976), insects (Bent 1939, MacRoberts 1970, Koenig et al. 2008), and the eggs of both conspecifics (Mumme et al. 1983) and other birds (Bryant 1921, Fajer et al. 1987). In addition to enumerating the aforementioned dietary items, MacRoberts (1970) commented that he did observe one Acorn Woodpecker consume a lizard, “probably Sceloporus occidentalis” (the Western Fence Lizard), along the central coast of California. Although the Western Fence Lizard may have been the most likely lizard species at that particular study site, the identification was not confirmed. Furthermore, MacRoberts remarked “whether the lizard was alive or dead when it came into the woodpecker’s possession is unknown.”