Forbs were the major plant food of the chicks. Harkness gilia ("Leptosiphon harknessii") was the main forb species in the first week and then steadily decreased. It was not found in the diet after 6 weeks. Loco ("Arabis convallarius") and common dandelion were important food items for most of the collection period and occurred with generally high frequencies. Common dandelion was the most abundant food item and the mainstay of the chicks. At 6 weeks of age, goatsbeard reached its peak in the diet and sego lily was found in greatest volume a week later. These five species were the most important forbs.