. Handbook of birds of eastern North America; with introductory chapters on the study of birds in nature . Fig. 16. The wing as a musical organ. Wingof Woodcock, showing outer attenuate featherswhich produce the whistling sound in fiight. THE TAII^-THE FEET 107 With Woodpeckers, Creepers and Chimney Swift the tail is modifiedfor use as a prop. The tail is exceedingly variable in form and is the seat of manyinteresting marks and colors which are displayed intentionally or when.

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbirds, bookyear1912