Mathis Pond is a charming pond on the West side of Lower Dog Bar Road between Krystal Court and Carrie Drive in the area known as Alta Sierra. The diminutive pond is owned by the Nevada County land Trust and maintained with the assistance of the Sierra Foothills Audubon Society. There is a Kiosk, benches overlooking the pond and a short gravel trail along with nine Bluebird boxes and a wood duck box. Conveniently located for Grass Valley residents this is a great place to slip away from a daily schedule for a few moments of birding.

Besides Bluebirds the avian population includes Titmice, a variety of finches, nuthatches, Towhees, Juncos, flycatchers, warblers and a Yellow Chat has been reported in the area.

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