1. Urine concentrations of two carnivorous birds, the white pelican and the roadrunner
2. SUTTON, G. M. 1940. Geococcyx californianus (Lesson), Roadrunner. Pp. 36-51, in A. C. Bent, Life his-tories of North American Cuckoos, Goatsuckers, Hummingbirds and their allies. U.S. Natl. Museum Bull.no. 175.SuttonGeococcyx californianus (Lesson), Roadrunner36Life histories of North American Cuckoos, Goatsuckers, Hummingbirds and their allies1940