Trickett, J.A. 1992 Journal Day Canyon San Gabriel Mountains near Rancho Cucamonga, San Bernardino Co., California. Elevation 2050 feet. April 7 College, and who accompanied me into the canyon today, I visited Day (Cant) Canyon with the idea of collecting lesser goldfinches on the southern-most portion of San Bernardis National Forest. Jim Lee keys to the two locked gates, put up by the local municipal water corporation, for which Day Canyon Creek is an important resource. Northwest, there is abundant evidence that the lower canyon and its bajada get lots of foot & bicycle traffic. The road toward the canyon crosses the Cucamonga fault, where upheaval has created a number of fans, one of which is still intact below Day Canyon (most apparently were intensively farmed until their post strike dried and blew away). The bajada and the lower mountain slopes show evidence of an extensive fire, this in 1989, according to Jim. The bajada & lower slopes and ridges were once chinise chaparral. That on the bajada has been almost en- tirely replaced by sage, both black sage & white sage. The road winds up toward the canyon mouth passing an exotic pine planting on one hill, and on another hill closer to the canyon mouth, a planting of Eucalyptus. Below due to the west of this encroaches the hill has been gouged into a flood control corporation. From this same spot, the mouth of Day Canyon is visible about 1/2 mile to the north. The canyon is narrow, confined by tall, steep, severe and obscured in this view by the snow-cled summit of Cucamonga Peak (8556'). The area immediately below Day Canyon, perhaps also because of flood control work, is mostly an unvegetated boulder field. But Day Canyon itself is well vegetated. The dominant tree in the canyon bottom is elder; a few old trees cared by Jim are 70 years old, but most large trees are 50-55 years old. These trees form a continuous, closed-canopy,