FIGURE 5. A modern barn owl roost in a cliff near Sedona, Arizona. 5.1. Guano streaks are visible at the top of the photo, and the surface of the ground below shows part of the accumulation of prey animals' bones weathered out of the owls' regurgitation pellets. 5.2. View of the ground below the roost with numerous scattered microvertebrate bones. A dark, intact pellet is below and to the left of the feather, and a grayish, partially weathered pellet is at left center. Feather is 23 cm long. 5.3. A finch skull is visible at the top and a woodrat (Neotoma) skull in the center of the photo, with a decomposing pellet between them and to the left of the feather. 5.4. In this view, a woodrat skull is visible at the top, a finch skull is at lower left center, and a weathering pellet can be seen as the gray mass at the lower right. Numerous other skeletal elements are discernible on close inspection.