National Geographic : 1936 Apr
THE NATIONAL GEOGRAPHIC MAGAZINE iNational 'xeograpnic society THEIR SONG REPERTOIRE IS AS VARIED AS THEIR DRESS IS DRAB With drop-shaped spots of brownish-black, the discreet wood thrush (center) is the hand somest of the clan. Its delightful trill suggests certain refrains of classic composers. One student estimated that an olive-backed thrush (upper left) sang 4,360 times daily during its spring concert. The somber, gray-cheeked thrush (upper right) sings endlessly in the short far-northern summer. The ascending song of the elusive hermit thrush (lower left) is heard in northern or mountain forests. In eastern woodlands the shy veery, carrying a grub for its young beside it, whistles a resonant note.