DlsTklxurioN 0F SONG SPARROWS
Phnmfluvhcd ham an exhibit in its: American Museum a: Natural Hlslory. American Museum Journal
Published by igrmissinn Iwm in:
Climatic Variation in Color and Size of Song Sparrows
By FRANK M. CHAPMAN
the first exhibit of several designed to illustrate variation in the color
and size of birds due to climatic agencies. It includes the leading
types of Song Sparrows. a species which is particularly susceptible to the
influences of its environment, no less than twenty climatic varieties, geo- graphical races. or subspecies of this wide-ranging bird being known.
East of the Rocky Mountains, in a region where climatic conditions are
.quite uniform. only one well-marked subspecies of Song Sparrow is found ;
1:64)
THE American Museum of Natural History has lately placed on view
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