Table 1 Mean, standard error (SE), 95% confidence interval (CI) and range for 11 characteristics of 38 Slender-billed Parakeet (E. leptorhynchus) nesting cavities in southern beech (L. obliqua) trees in the central valley of southern Chile, 2008–2011
Cavity feature | Mean | SE | CI | Range |
|---|---|---|---|---|
Nest tree height (m) | 30.4 | 1.1 | 28.8–32.5 | 5.0–43.5 |
Nest tree DBH (cm) | 134.5 | 4.7 | 125.4–144.0 | 83.4–193.9 |
Nest tree agea (years) | 336.3 | 12.3 | 312.2–360.4 | 209.0–485.0 |
Cavity heightb (m) | 12.5 | 0.9 | 10.7–14.2 | 3.0–22.8 |
Entrance height (cm) | 51.0 | 13.3 | 24.9–77.1 | 28.5–400.0 |
Entrance width (cm) | 11.5 | 0.7 | 10.2–12.8 | 6.0–25.0 |
Cavity diameter Ac (cm) | 36.5 | 2.6 | 31.8–41.9 | 12.0–73.0 |
Cavity diameter Bd (cm) | 39.6 | 2.4 | 34.8–44.3 | 18.0–84.0 |
Cavity depth (cm) | 90.3 | 24.2 | 42.9–138.5 | 5.0–500.0 |
Internal ellipsee (cm2) | 1239.0 | 163.0 | 919.5–1558.5 | 170.0–4022.0 |
Cavity volumef (L) | 93.7 | 24.6 | 45.5–141.9 | 2.9–549.5 |