Worthen's Sparrow
near nest site
4 km S of Las Esperanzas, Nuevo Leon, Mexico
18 June 1994

Chuck Sexton and I discovered a Worthen's Sparrow singing on territory, found its nest and eggs and documented the occurrence. We later co-authored a paper for an ornithological journal about this species in northern Mexico.

Behrstock, Robert A., Charles W. Sexton, Greg W. Lasley, Ted L. Eubanks, and John P. Gee. 1997. First nesting records of Worthen’s Sparrow Spizella wortheni for Nuevo Leon, Mexico, with a habitat characterization of the nest site and notes on ecology, voice, additional recent sightings and leg coloration. Cotinga 8: 27-33.