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J. Derr: Lincoln's Sparrow
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J. Derr: Grasshopper Sparrow
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J. Derr: Savannah Sparrow
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J. Derr: Swamp Sparrow
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J. Derr: Swamp Sparrow
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J. Derr: American Tree Sparrow
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J. Derr: Lincoln's Sparrow
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J. Derr: Nelson's Sparrow
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J. Derr: White-throated Sparrow
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J. Derr: Swamp Sparrow
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J. Derr: Lincoln's Sparrow
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J. Derr: Vesper Sparrow
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J. Derr: Henslow's Sparrow
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J. Derr: Clay-colored Sparrow
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J. Derr: Lapland Longspur
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J. Derr: Fox Sparrow
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J. Derr: Chipping Sparrow
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J. Derr: Savannah Sparrow
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J. Derr: Savannah Sparrow