Table 1.
The data collected for all 18 species examined in this study, including sample sizes (n) and specimen numbers. The data columns are as follows.
| Species | n | Specimen number | ECV | Brain SA | OLSA | OF | Orbit Area | Orbit Diameter | Orbit Depth | |
|---|---|---|---|---|---|---|---|---|---|---|
| Cyanoramphus auriceps | Yellow-crowned Parakeet | 1 | QMO.28238 | 2537.98 | 1726.97 | 174.54 | 3.45 | 88.78 | 10.63 | 6.80 |
| Glossopsitta concinna | Musk Lorikeet | 1 | QMO.28231 | 3057.04 | 1443.83 | 135.66 | 3.36 | 100.95 | 11.34 | 8.67 |
| Glossopsitta porphyrocephala | Purple-crowned Lorikeet | 1 | QMO.28574 | 1724.80 | 954.34 | 87.06 | 2.62 | 69.98 | 9.44 | 6.22 |
| Glossopsitta pusilla | Little Lorikeet | 1 | QMO.12719 | 1537.40 | 880.31 | 97.94 | 2.19 | 63.12 | 8.97 | 6.29 |
| Melopsittacus undulatus | Budgerigar | 1 | QMO.31840 | 1708.90 | 1053.00 | 96.75 | 2.45 | 67.30 | 9.26 | 6.63 |
| Neopsephotus bourkii | Bourke’s Parrot | 2 | QMO.28232, QMO.28399 | 1278.11 | 806.35 | 95.49 | 2.02 | 76.08 | 9.84 | 5.95 |
| Neophema elegans | Elegant Parrot | 3 | QMO.28276, QMO.28277, QMO.28291 | 1335.60 | 838.36 | 99.32 | 2.52 | 80.76 | 10.14 | 6.20 |
| Neophema pulchella | Turquoise Parrot | 3 | QMO.28290, QMO.28589, QMO.28296 | 1269.61 | 822.30 | 109.03 | 2.79 | 78.82 | 10.02 | 5.81 |
| Neophema splendida | Scarlet-chested Parrot | 1 | QMO.28293 | 1285.16 | 783.46 | 92.61 | 2.12 | 73.56 | 9.68 | 6.43 |
| Pezoporus occidentalis | Night Parrot | 1 | QMO.29055 | 2478.07 | 1212.91 | 104.25 | 2.49 | 108.05 | 11.73 | 7.45 |
| Pezoporus wallicus | Eastern Ground Parrot | 1 | QMO.28716 | 2382.71 | 1259.38 | 149.70 | 4.77 | 133.99 | 13.06 | 7.57 |
| Platycercus adscitus | Pale-headed Rosella | 1 | QMO.31746 | 2680.79 | 1358.34 | 137.29 | 3.84 | 105.18 | 11.58 | 8.33 |
| Platycercus eximius | Eastern Rosella | 1 | QMO.12720 | 2696.65 | 1397.49 | 147.20 | 3.62 | 104.66 | 11.55 | 7.46 |
| Platycercus icterotis | Western Rosella | 1 | QMO.28307 | 2389.30 | 1216.22 | 131.02 | 3.52 | 99.10 | 11.24 | 7.46 |
| Psephotus haematonotus | Red-rumped Parrot | 1 | QMO.28294 | 1897.10 | 1056.35 | 122.53 | 3.15 | 81.68 | 10.20 | 7.07 |
| Psephotus varius | Mulga Parrot | 1 | QMO.16667 | 1534.53 | 911.62 | 100.46 | 3.42 | 81.17 | 10.17 | 6.54 |
| Psitteuteles versicolor | Varied Lorikeet | 1 | QMO.12024 | 1592.65 | 921.98 | 91.41 | 2.18 | 74.02 | 9.71 | 7.31 |
| Trichoglossus chlorolepidotus | Scaly-breasted Lorikeet | 1 | QMO.32344 | 3059.63 | 1457.50 | 142.60 | 4.06 | 107.17 | 11.68 | 8.90 |
The data columns are as follows: ECV – endocranial volume (mm3), Brain SA – brain surface area (mm2), OLSA – optic lobe surface area (mm2), OF – optic foramen area (mm2), Orbit Area (mm2), Orbit Diameter (mm), and Orbit Depth (mm).