Egg Dimensions and Shell Characteristics of Bulwer's Petrels, Bulweria bulwerii, on Laysan Island, Northwestern Hawaiian Islands

Measured values for Bulwer's Petrel eggs and eggshells from Laysan Island, Northwestern Hawaiian Islands, were within 10% of predicted values available in the literature. In the absence of published predictive equations for egg volume, fresh-egg contents, and total functional pore area of the shell, in Procellariiformes, new logarithmic relationships were developed for tropical Procellariiformes. Data are now needed for species breeding at higher latitudes to determine if these relationships are representative of all Procellariiformes