Clark, H.O., Jr. 2009. Predation and behavioral interactions between horned lizards and arid land foxes. Sonoran Herpetologist 22:6-7. more>>
Short Story collection - gathered for the Fresno Scifi & Fantasy Writers group more>>
Clark, H.O., Jr. 2008. Review of Unnatural landscapes: tracking invasive species by Ceiridwen Terrill. Western North American Naturalist 68:537-539. ... more>>
Randel, C.J., III, and H.O. Clark, Jr. 2008. Sex ratios of the white-tailed antelope ground squirrel (Ammospermophilus leucurus), Indian Wells ... more>>
M.S. Biology. California State University, Fresno. 2001. Thesis: “Endangered San Joaquin kit fox and non-native red fox: interspecific competitive ... more>>
Clark, H.O., Jr., G.D. Warrick, B.L. Cypher, P.A. Kelly, D.F. Williams, and D.E. Grubbs. 2005. Competitive interactions between endangered kit foxes ... more>>