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Physiographic Strata

Physiographic Strata. Areas of similar geographic and vegetation features Developed by modifying vegetation and soil distribution maps Allow for examination of bird species in a small area that experiences a specific climate. Map of Physiographic Strata of the U.S.

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Physiographic Strata

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  1. Physiographic Strata • Areas of similar geographic and vegetation features • Developed by modifying vegetation and soil distribution maps • Allow for examination of bird species in a small area that experiences a specific climate

  2. Map of Physiographic Strata of the U.S.

  3. Bewick’s Wren Distribution Map

  4. House Wren Distribution Map

  5. Wren Population Patterns • Bewick’s Wren populations seem largest in the southwest • Strongest areas with no House Wrens are in southern Texas, in Strata 53, 54, 56 • House Wren populations seem largest in the northern US • Strongest areas with no Bewick’s Wrens are in the north and midwest, in Strata 31,32,40 • Overlap between the two is most prevalent in southwestern California, in Strata 92,94, and 83

  6. Strata 54 – Rolling Red Plains- Texas Bewick’s Wren House Wren

  7. Strata 31 –Till Plains - Midwest Bewick’s Wren House Wren • No data for species

  8. Strata 92 – California Foothills – Southern California Bewick’s Wren House Wren

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