Mitchell Canyon: Birding Hotspot
By Steve and Carol Lombardi
The north slope of Mt. Diablo near Clayton offers one of the best birding spots in the East Bay. Mitchell Canyon is a shady, steep-sided, north-facing canyon with varied habitat and more-or-less permanent water. It provides easy access to both the casual stroller and the serious hiker/biker/equestrian. (Birding by horse? Now, there’s a concept.)
The canyon is a delightful place to bird year-round, but becomes spectacular from late April to early May. This is when migrant warblers, flycatchers, and others make brief visits on the way to their summer breeding grounds. And the canyon’s resident breeders show up and make themselves known with their songs.
While you’re there, don’t spend all your time looking up into the canopy. Be sure to enjoy the plethora of spring-blooming wildflowers alongside the trail. The canyon is one of the best places to see the Mt. Diablo globe lily (Calochortus pulchellus Benth.) among many other wildflowers.
Because of the canyon’s steep sides and deep shade, the area provides several different habitat types. Pine-oak woodland, riparian, grassland, chaparral, and sage scrub are all accessible in a relatively short walk.
Mitchell Canyon in springtime, by Scott Hein
Mitchell Canyon in the dry season, by Matt Guziejka
All northside trails into the park eventually lead to Mitchell Canyon (see the park map listed below). From the Clayton entrance, Mitchell Canyon Road follows Mitchell Creek and runs moderately uphill for about two miles through oak woodland and riparian habitat. It then breaks out of the trees and becomes a steep climb through chaparral and scrub, eventually emerging onto Summit Road in the main part of the park after several strenuous miles. If you’re out for a morning bird walk, the beginning of the steep portion is a good place to turn around. Of course, if you want to hike to the 3,800 foot Mt. Diablo summit, you’re welcome to do it.
A more moderate spring bird walk would start in the Mitchell Canyon visitor center parking lot. Begin by birding in the oaks around the parking area for oak breeders like White-breasted Nuthatch, and “parking lot” birds like quail and turkey. Stop in the visitor center if it’s open (quirky hours, but usually open on weekends). Walk through the native plant garden, look up at the snags for cavity-nesters like Acorn Woodpecker and European Starling, and pick up the trail guide to the numbered signposts.…

View of Quito from lodge grounds by Krista Jordan
Dan Harris / Photo by Ilana DeBare
Ring-necked Ducks, photographed in Golden Gate Park during a past Birdathon by Dan Harris
Adult male Western Snowy Plover / Photo by Jerry Ting
Debris at Chabot Gun Club / Photo by gritphilm (Creative Commons)
Male Bald Eagle at Lake Chabot / Photo by Mary Malec