This thematic map shows the distribution, density and types of birds found around the world. The darker shading represents regions that are more densely populated, and the colored lines indicate the areas in which a specific family can be found. The middle map focuses on the birds of Europe and at bottom is an image of Monte Prosa and Mt. St. Gottard to illustrate the perpendicular distribution of birds in the Alps. The vignettes along the sides of the sheet show the types of birds to be found in the "new world" and the "old world."

Keith Johnson worked in conjunction with German Heinrich Berghaus to produce the Physical Atlas, the first truly comprehensive thematic atlas. The maps from this atlas made a huge impact on cartography in general and specifically on the graphic portrayal of geographical data.

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Condition: A

Clean and bright with contemporary outline color and light toning along the edges of the sheet.