Sylvester Allred


Principal Lecturer, Emeritus
Phone: 928-523-7214 (voice mail only)

Research/teaching interests

  • Abert's squirrel ecology and reproduction

Academic highlights

  • PhD: Botany Northern Arizona University, 1989
  • MS: Biology Jacksonville State University, 1980
  • BS: Biology and Physical Education Wayland College, 1968 

Sylvester Allred's anatomical studies have revealed that natural populations of the small game species, the Abert squirrel, is reproductively active from late winter to late fall.

Histological examination of reproductive tissues indicates evolutionary divergence of populations of the squirrel on the north rim of the Grand Canyon from populations on the south rim.

These findings are relevant to the development of small game management policy in the Arizona Game and Fish Department.

Brief teaching philosophy

Students should expect their professors to be well organized, knowledgeable, passionate, and enthusiastic about their subjects. Professors should expect their students to come to class prepared to learn and participate in class.

Selected publications

Allred, Sylvester. 2011. The Natural History of Tassel-Eared Squirrels. University of New Mexico Press. Albuquerque. 226 pp.

Allred, S. and G. Pogany. 1996. Early estrus in a female Abert squirrel (Sciurus aberti aberti). Southwestern Naturalist 41:90

Allred, W. S. 1995. Black-bellied form of an Abert squirrel (Sciurus aberti aberti) from the San Francisco Peaks Area, Arizona. The Southwestern Naturalist 40(4):420

Pogany, G. C., W. S. Allred, and T. Barnes. 1995. The reproductive cycle of the Abert squirrel. Powdermill Biological Station, Carnegie Museum of Natural History.

Pogany, G. C. and W. S. Allred. 1995. Abert squirrels on the Colorado Plateau: Their reproductive cycle. In: Second Biennial Conference on Research in Colorado Plateau National Parks. pp 293-305. NPS/NRNAU/NRTP-95/11.