In New York and New England the sap starts up in the sugar maple the very day the bluebird arrives, and sugar-making begins forthwith. The bird is generally a mere disembodied voice; a rumor in the air for two or three days before it takes visible shape before you.
John Burroughs, Charlotte ZoĆ« Walker (2001). “The Art of Seeing Things: Essays”, p.49, Syracuse University Press
