California's Threatened Species

Avian

• Least Bell’s vireo (Vireo bellii pusillus)
  • Relatively small bird ranging from 4 - 5 inches long. Physical features include short rounded wings with a short / straight bill. Feathers are mostly grey along the back and wings with a pale breast and distinctive faint white eye ring.

• Southwestern willow flycatcher (Empidonax traillii extimus)
  • Approximately 6 inches in length or smaller, including tail. Coloration consists of brownish-olive to grey-green body, pale olive breast, whitish throat, conspicuous light-colored wingbars, and completely pale lower mandible. Easily identified by liquid, sharp whistles or a dry sprrit vocalizations.