Green, J. A., Butler, P. J., Woakes, A. J., Boyd, I. L. and Holder, R. L. (2000). Heart rate and rate of oxygen consumption of exercising macaroni penguins. J. Exp. Biol.204, 673-684.

This paper was unfortunately printed with two small errors. We would like to take this opportunity to correct these errors for all readers. (1) On p. 679, Equation 12, which currently reads:
$\ \mathrm{s}{\dot{V}}_{\mathrm{O}_{2}}=-118.18f_{\mathrm{H}}+0.29,$
12
$\ \mathrm{s}{\dot{V}}_{\mathrm{O}_{2}}=0.29f_{\mathrm{H}}-18.88,$