TABLE 4.
Slope and intercept values for individual species regressions between equator eggshell thickness (mm) and egg length (mm) or egg width (mm) for 10 individual species
| Species | Egg length | Egg width | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Slope | Intercept | Fdf | R 2 | p | Slope | Intercept | Fdf | R 2 | p | |
| American avocet | 0.0005094 | 0.21660 | F 1,840 = 3.50 | <.01 | .06 | 0.00247 | 0.15728 | F 1,840 = 21.65 | .03 | <.001 |
| Black‐necked stilt | 0.0002068 | 0.20836 | F 1,199 = 0.11 | <.01 | .74 | 0.00362 | 0.10513 | F 1,199 = 8.54 | .04 | .004 |
| Black skimmer | 0.0005810 | 0.21971 | F 1,9 = 0.17 | .02 | .69 | −0.00004 | 0.24889 | F 1,9 < 0.01 | <.01 | .99 |
| California gull | 0.0007571 | 0.30291 | F 1,173 = 1.47 | <.01 | .23 | 0.00210 | 0.25683 | F 1,173 = 2.83 | .02 | .09 |
| California least tern | 0.0000569 | 0.14267 | F 1,328 = 0.01 | <.01 | .92 | 0.00382 | 0.05854 | F 1,328 = 15.45 | .04 | <.001 |
| Caspian tern | 0.0012902 | 0.24736 | F 1,60 = 1.21 | .02 | .28 | 0.00270 | 0.21086 | F 1,60 = 1.44 | .02 | .23 |
| Double‐crested cormorant | 0.0014791 | 0.32730 | F 1,86 = 1.53 | .02 | .22 | 0.00713 | 0.13931 | F 1,86 = 12.24 | .12 | <.001 |
| Forster's tern | 0.0002329 | 0.19323 | F 1,1,079 = 0.84 | <.01 | .36 | 0.00296 | 0.11402 | F 1,1,079 = 34.26 | .03 | <.001 |
| Western snowy plover | −0.0019776 | 0.22567 | F 1,32 = 0.72 | .02 | .40 | 0.00006 | 0.16376 | F 1,32 < 0.01 | <.01 | .98 |
| Wood duck | 0.0017174 | 0.24015 | F 1,37 = 0.87 | .02 | .36 | 0.00648 | 0.07923 | F 1,37 = 8.94 | .19 | .005 |