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Download physiographic strata maps and graphs
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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. Bewick’s Wren Distribution Map House Wren Distribution Map 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 Strata 54 – Rolling Red Plains- Texas Bewick’s Wren House Wren Strata 31 –Till Plains - Midwest Bewick’s Wren • No data for species House Wren Strata 92 – California Foothills – Southern California Bewick’s Wren House Wren
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