Water vapour conductance
The three species of Apteryx differed significantly in the water vapour conductance of their eggshells (Figure 7A), with Brown Kiwi having a significantly higher water vapour conductance when compared to Tokoeka (F=3.87, p=0.001), and Rowi being significantly different to Tokoeka (F=2.06, p=0.05). Rowi did not differ significantly from Brown Kiwi (F=1.91, p= 0.062); however, this comparison could be considered close to being significant. The different regions of the eggshell confirmed existing differences in water vapour conductance between species, however Rowi being the only one significantly different, marginally when compared to Brown Kiwi (T=-2.11, p= 0.05) and significantly when compared to Tokoeka (T=2.59 , p =0.02), also only the blunt end was significantly different to the other two regions for the three species. There was no interaction between species and fragment (Table 6).