Spizella
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- American Tree Sparrow (Spizella Arborea) Vulnerability: Increase Likely Confidence: Moderate
- Birds of the Great Plains (Revised Edition 2009) by Paul Johnsgard Papers in the Biological Sciences
- “SAGEBRUSH” BREWER's SPARROW Spizella Breweri Breweri
- A Hybrid Brewers
- Wildlife Action Plan September 2015
- A New Genus for the American Tree Sparrow (Aves: Passeriformes: Passerellidae)
- Bird Species List for Glacier Creek Preserve This Bird Species List Includes Observations and Documented Surveys Ranging from the Late 1990'S to Present
- Birds of Bouverie Preserve
- Species Assessment for Brewer's Sparrow (Spizella
- Under Cover: Wildlife of Shrublands and Young Forest
- Here's Lookin' at You…Spizella?
- Winter Population Trends of Six Species of Sparrows
- Chicago, Illinois, USA Common Sparrows 1 Mark Vaughan
- Wekiva River Basin State Parks
- Chestnut-Sided Warbler
- The Timberline Sparrow, Spizella (Breweri) Taverneri in Alaska, With
- Western Birds