| Respiratory physiology of burrowing mammals and birds DF Boggs, DL Kilgore Jr, GF Birchard Comparative Biochemistry and Physiology Part A: Physiology 77 (1), 1-7, 1984 | 166 | 1984 |
| Optimal hematocrit: theory, regulation and implications GF Birchard American Zoologist 37 (1), 65-72, 1997 | 134 | 1997 |
| Effects of incubation temperature. GF Birchard | 127 | 2004 |
| Traditional allometric analysis fails to provide a valid predictive model for mammalian metabolic rates GC Packard, GF Birchard Journal of Experimental Biology 211 (22), 3581-3587, 2008 | 126 | 2008 |
| Influence of pregnancy on oxygen consumption, heart rate and hematology in the garter snake: implications for the “cost of reproduction” in live bearing reptiles GF Birchard, CP Black, GW Schuett, V Black Comparative Biochemistry and Physiology Part A: Physiology 77 (3), 519-523, 1984 | 100 | 1984 |
| Fitting statistical models in bivariate allometry GC Packard, GF Birchard, TJ Boardman Biological Reviews 86 (3), 549-563, 2011 | 95 | 2011 |
| Sexual differentiation and hatching success by painted turtles incubating in different thermal and hydric environments GC Packard, MJ Packard, GF Birchard Herpetologica, 385-392, 1989 | 88 | 1989 |
| Comparative analyses of contaminant levels in bottom feeding and predatory fish using the national contaminant biomonitoring program data. JM Kidwell, LJ Phillips, GF Birchard | 86 | 1995 |
| Role of theRete mirabile ophthalmicum in maintaining the body-to-brain temperature difference in pigeons DL Kilgore, DF Boggs, GF Birchard Journal of comparative physiology 129, 119-122, 1979 | 79 | 1979 |
| Heart rate during development in the turtle embryo: effect of temperature GF Birchard, CL Reiber Journal of Comparative Physiology B 166, 461-466, 1996 | 76 | 1996 |
| Avian eggshell thickness: scaling and maximum body mass in birds GF Birchard, DC Deeming Journal of Zoology 279 (1), 95-101, 2009 | 70 | 2009 |
| Growth, metabolism, and chorioallantoic vascular density of developing snapping turtles (Chelydra serpentina): influence of temperature GF Birchard, CL Reiber Physiological Zoology 68 (5), 799-811, 1995 | 66 | 1995 |
| Environmentally induced variation in body size and condition in hatchling snapping turtles (Chelydra serpentina) GC Packard, K Miller, MJ Packard, GF Birchard Canadian Journal of Zoology 77 (2), 278-289, 1999 | 62 | 1999 |
| Conductance of water vapor in eggs of burrowing and nonburrowing birds: implications for embryonic gas exchange GF Birchard, DL Kilgore Jr Physiological Zoology 53 (3), 284-292, 1980 | 55 | 1980 |
| Egg mass and incubation period allometry in birds and reptiles: effects of phylogeny DC Deeming, GF Birchard, R Crafer, PE Eady Journal of Zoology 270 (2), 209-218, 2006 | 54 | 2006 |
| Allometry of egg and hatchling mass in birds and reptiles: roles of developmental maturity, eggshell structure and phylogeny DC Deeming, GF Birchard Journal of Zoology 271 (1), 78-87, 2007 | 51 | 2007 |
| Oxygen permeability of the shell and membranes of chicken eggs during development SR Kayar, GK Snyder, GF Birchard, CP Black Respiration Physiology 46 (3), 209-221, 1981 | 46 | 1981 |
| Ventilatory and hematopoietic responses to chronic hypoxia in two rat strains LC Ou, J Chen, E Fiore, JC Leiter, T Brinck-Johnsen, GF Birchard, ... Journal of Applied Physiology 72 (6), 2354-2363, 1992 | 45 | 1992 |
| Allometric equations for predicting body mass of dinosaurs GC Packard, TJ Boardman, GF Birchard Journal of Zoology 279 (1), 102-110, 2009 | 42 | 2009 |
| Incubation time in reptilian eggs GF Birchard, D Marcellini Journal of Zoology 240 (4), 621-635, 1996 | 42 | 1996 |
