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William (tectum macula) Walsh: American Buffalo
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William (tectum macula) Walsh: Buffalo Calf
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William (tectum macula) Walsh: Pronghorn Antelope
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William (tectum macula) Walsh: Who is Studying Who?
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William (tectum macula) Walsh: Mountain Goat 1
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William (tectum macula) Walsh: Mountain Goat 2
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William (tectum macula) Walsh: Columbian Ground Squirrel? 1
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William (tectum macula) Walsh: Columbian Ground Squirrel? 2
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William (tectum macula) Walsh: Mountain Goat at Hidden Lake