Table 3.
Pairwise comparison of metrics of provisioning effort for each deployment type. P-values calculated relative to the ‘no device’ group.
| Deployment | Nights fed | Peak mass (g) | Average feed (g) | Provisioning days | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mean | p-value | Mean | p-value | Mean | p-value | Mean | p-value | |||
| No device | 29.3 ± 1.7 | – | 543.1 ± 13.9 | – | 29.3 ± 1.2 | – | 51.0 ± 3.3 | – | ||
| GLS | 28.8 ± 1.7 | 0.979 | 542.3 ± 14.5 | 1.000 | 29.4 ± 1.3 | 1.000 | 49.9 ± 3.3 | 0.862 | ||
| GPS | 29.4 ± 1.7 | 1.000 | 552.9 ± 13.6 | 0.927 | 30.5 ± 1.2 | 0.908 | 50.9 ± 3.3 | 1.000 | ||
| GPS (incub) | 29.2 ± 1.7 | 1.000 | 557.9 ± 18.2 | 0.896 | 30.5 ± 1.2 | 0.976 | 51.2 ± 3.3 | 0.999 | ||
| Combined | 29.4 ± 1.7 | 1.000 | 545.4 ± 13.9 | 0.999 | 30.7 ± 1.2 | 0.908 | 52.0 ± 3.3 | 0.903 | ||
Nights fed = total number of nights in which a provisioning visit was detected; peak mass = maximum mass attained by the chick; average feed = mean feed per night where provisioning visit detected; provisioning days = total number of days from hatching until last visit detected.