[1] She taught for several years and pioneered studies of avian life history and physiology on the white-crowned sparrow.
[1] Though originally from San Francisco, DeWolfe moved to Mill Valley, California to live with her grandmother when she was ten years old.
However, during the Great Depression, jobs were difficult to come by and schools wanted to hire teachers who had experience in multiple disciplines.
[1] DeWolfe took her first position in 1939 after completing her PhD at Placer Junior College in Rocklin, California.
It was also observed that the Z. I. nuttalli showed breeding behavior for six months, went through gonadal recrudescence in December, had a slight prenatal molt, did not carry much fat, and had several local song dialects.
Her later work on the Z. l. gambelii showed it was a long-distance migrating sparrow, had very different breeding distributions, and had no clear geographically structured song dialects.
[1] DeWolfe published two autobiographies that reside in the UC Santa Barbara Library, Joyous Errand (1998) and Further Recollections (1999).
[1] Over the last decade of her life, she experienced many chronic health conditions and she died of an intestinal blockage on May 2, 2008.