In Condor 109(4), November 2007, equations in the paper “Approximating variance of demographic parameters using the delta method: a reference for avian biologists” by Larkin Powell contained errors by the author.
Table 1 contained an error in the example given for the variance of the function θ1/7. The corrected formula for the variance is
Table 3, as corrected, is:
Approximations for sampling variance of survival estimates, by the delta method, when changing the scale of temporal units.