 Among other 19th-century poems about the first robin of spring is "The First Robin" by Dr. William H. Drummond, which according to the author's wife is based on a Quebec superstition that whoever sees the first robin of spring will have good luck.The association has continued down to the present day, as, for example, in one "Calvin and Hobbes" cartoon from 1990 that had Calvin celebrating his inevitable wealth and fame after seeing the first robin of spring.The harbinger of spring sobriquet is borne out by the fact that American robins tend to follow the isotherm north in spring, but also south in fall.