Publications

Ficken, M. F., K. M. Rusch, S. J. Taylor, and D. R. Powers. 2000. Blue-throated hummingbird song: a pinnacle of nonoscine vocalizations. Auk 117:120-128.

Ficken, M. F., K. M. Rusch, S. J. Taylor, and D. R. Powers. 2002. Reproductive behavior and communication in blue-throated hummingbirds. Wilson Bulletin 114:197-209.

McWhorter, T. J., D. R. Powers, and Carlos Martínez del Rio. 2003. Are hummingbirds facultatively ammonotelic? Nitrogen excretion and requirements as a function of body size. Physiological and Biochemical Zoology 76:731-743.

Powers, D. R. 1987. Effects of variation in food quality on the breeding territoriality of the male Anna's hummingbird. Condor 89:103-111.

Powers, D. R. 1991. Diurnal variation in mass, metabolic rate, and respiratory quotient in Anna's and Costa's hummingbirds. Physiological Zoology 64:850-870.

Powers, D. R. 1992. Effect of temperature and humidity on evaporative water loss in Anna's hummingbird (Calypte anna). Journal of Comparative Physiology B 162:74-84.

Powers, D. R. 1996. Magnificent Hummingbird (Eugenes fulgens). No. 221 in The birds of North America (A. Poole and f. Gill, Eds.). Academy of Natural Sciences, Philadelphia, and the American Ornithologists' Union, Washington, DC.

Powers, D. R. 1999. Broad-billed Hummingbird (Cynanthus latirostris). No. 430 in The birds of North America (A. Poole and f. Gill, Eds.). Academy of Natural Sciences, Philadelphia, and the American Ornithologists' Union, Washington, DC.

Powers, D. R. 2004. The impact of social interactions on torpor use in hummingbirds. In Life in the Cold: Evolution, Mechanisms, Adaptation, and Application. (B. Barnes and H. Carey, eds.) Twelfth International Hibernation Symposium. Biological Papers of the University of Alaska, no. 27. Institute of Arctic Biology, University of Alaska, Fairbanks, Alaska. (in press)

Powers, D. R., A. R. Brown, and J. A. Van Hook. 2003. Influence of normal daytime fat deposition on laboratory measurements of torpor use in territorial and nonterritorial hummingbirds. Physiological and Biochemical Zoology 76:389-397.

Powers, D. R., and T. M. Conley. 1994. Field metabolic rate and food consumption of two sympatric hummingbird species in southeastern Arizona. Condor 96:141-150.

Powers, D. R., and T. McKee. 1994. The effect of food availability on time and energy expenditures of territorial and nonterritorial hummingbirds. Condor 96:1064-1075.

Powers, D. R., and K. A. Nagy. 1988. Field metabolic rate and food consumption by free-living Anna's hummingbirds (Calypte anna). Physiological Zoology 61:500-506.

Tobalske, B. W., D. L. Altshuler, and D. R. Powers. 2004. Take-off mechanics in hummingbirds (Trochilidae). Journal of Experimental Biology 207:1345-1352.

Warrick, Douglas R., B. W. Tobalske, and D. R. Powers. 2005. Aerodynamics of the hovering hummingbird. Nature 435:1095-1097.

Link to Hummingbird Literature