Casotti, G., T. Waldron, G. Misquith, D. Powers, and L. Slusher.  2007.  Expression and localization of an aquaporin-1 homologue in the avian kidney and lower intestinal tract.  Comparative Biochemistry and Physiology A 147:355-362

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

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

McWhorter, T. J., D. R. Powers, C. Martinez del Rio. 2003.  Are Hummingbirds Facultatively Ammonotelic?  Nitrogen Excretion and Requirements as a Function of Body Size.  Physiological & 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. and K. A. Nagy. 1988. Field metabolic rate and food consumption by free-living Anna's hummingbirds (Calypte anna). Physiological Zoology 61:500-506.

Powers, D. R. 1991.  Diurnal variation in mass, metabolic rate, and respiratory quotient in Anna's and Costa's Hummingbirds.  Physiological Zoology 64:860-880.

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

Powers, D. R. 1996.  Magnificent Hummingbird (Eugenes fulgens).  In The Birds of North America (A. Poole and F. Gill, Eds.).  Philadelphia:  The Academy of Natural Sciences; Washington, D.C.:  The American Ornithologists’ Union.

Powers, D. R.  1999.  Family Trochilidae (Hummingbirds).  Pp. 536-680 In:  Del Hoyo, J., Elliott, A., and Sargatal, J., eds. (1999).  Handbook of the Birds of the World.  Vol. 5.  Barn owls to hummingbirds.  Lynx Edicions, Barcelona.

Powers, D. R. 1999.  Broad-billed Hummingbird (Cynanthus latirostris).  In The Birds of North America, No. 430 (A. Poole and F. Gill, Eds.).  The Birds of North America, Inc., Philadelphia, PA.

Powers, D. R.  2004.  The impact of social interactions on torpor use in hummingbirds.  In Life in the Cold:  Evolution, Mechanisms, Adaptation, and Application.  Twelfth International Hibernation Symposium (Barns, B. M, and Carey, H. V. eds.).  Biological Papers of the University of Alaska, number 27.  Fairbanks, AK, USA:  Institute of Arctic Biology, University of Alaska.

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

Powers, D. R. and T. Conley. 1994.  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 non-territorial hummingbirds.  Condor 96:1064-1075.

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

Tobalske, B. W., A. A. Biewener, D. R. Warrick, T. L. Hedrick, and D. R. Powers.  2010.  Effects of flight speed upon muscle activity in hummingbirds.  Journal of Experimental Biology 213:2515-2523. 

Tobalske, B. W., D. R. Warrick, C. J. Clark, D. R. Powers, T. L. Hedrick, G. A. Hyder, and A. A. Biewener.  2007.  Three-dimensional kinematics of hummingbird flight.  Journal of Experimental Biology 210:2368-2382. 

Warrick, D., B. W. Tobalske, and D. R. Powers.  2005.  Aerodynamics of the hovering hummingbird.  Nature 435:1094-1097.

Warrick, D., B. W. Tobalske, and D. R. Powers.  2009. Lift production in the hovering hummingbird.  Proceedings of the Royal Society B 276:3747-3752.