"This is a remnant of natural habitat saved from development, which encroaches from all sides. Parley’s Creek empties from the mouth of its namesake canyon and flows through this park, nurturing the riparian zone and providing a stopover for numerous species of passerines.
From the parking area, walk downhill onto the valley floor. You’ll descend through a few Gambel oaks (which here constitute the “pinyon-juniper” zone) before reaching groves of box elder and cottonwood trees. In this drier upland zone, Black-billed Magpies and Western Scrub-Jays are two of the noisier, if not most common, species.
The habitat in this valley is a patchwork of sagebrush, brushy oak, and riparian; you’re as likely to see a species in one place as another. One exception, ofcourse, is the American Dipper, which will be somewhere in the creek corridor."