The activity around here has been increasing the past couple of days. After encountering the Yellow-rumps singing at the south end of the park on Saturday morning I now have them singing in the campground (as well as other areas in the north end). On Sunday morning a hike to Mossy Cave yielded some Cliff Swallows and, though I never saw the bird, a singing Plumbeous Vireo. I would probably still be scratching my head over the vireo had it not been for the fact I was carrying the park bird list (narrowed the choices) and my Palm with Handheld Birds - that software is really turning out to be a big plus. This morning while out roaming the Rim Trail and chatting with visitors I was confounded by another bird that I heard singing and I kept looking up high in the pines for a warbler. Turned out th damn bird was practically at eye level in a juniper just off the trail - a Green-tailed Towhee. I saw another towhee in the campground tonight along with another singing Plumbeous Vireo (still haven't seen it, though); add the Western Scrub-jay I saw on a trip to town late this afternoon and that makes 39 species since I arrived here. Tomorrow I am bound and determined to photograph something.