About This Route
The Merced River Trail from Swinging Bridge to El Capitan Bridge (2-4 miles out-and-back) in Yosemite Valley excels for riparian birds like belted kingfishers, great blue herons, and Lewis's woodpeckers. Flat riverside path suits all levels. NPS urges quiet observation to respect foraging zones; use zoom lenses over close approaches.
Safety Considerations
Flash floods surge post-storm; check river gauge at NPS site. Slippery rocks near water harbor rattlesnakes; probe with poles. Coyotes hunt dawn/dusk; keep 150 feet distance. Summer poison ivy abundant; rinse exposures. Bicycles share trail; announce passing.
Essential Gear
Pack Leica Noctivid 8x42 binoculars, AllTrails app, Deuter Speed Lite 20 pack, quick-dry pants from prAna, water filter like Sawyer Squeeze, snacks, epinephrine if allergic, whistle, and Trails Illustrated Yosemite map.
Emergency Tips
Avoid river during high flows; back away from snakes slowly. Coyote charge: make loud noise, appear large.