- His soft warble, beautiful blue coat, warm waistcoat, and gentle manners make him the most welcome herald of spring.
- Birds of America, 1917
- His soft warble melts the ear, as the snow is melting in the valleys around. The bluebird comes and with his warbles drills the ice and sets from the rivers and ponds and frozen ground.
- Henry D. Thoreau, March 2, 1859
The Eastern Bluebird’s Warble: Click Here and turn the volume up: http://bluebirdia.homegrowngoodies.com/bluebird-song-audio.htm
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