Table 6.
Results from a linear mixed effects model examining factors affecting nest sizes of blue tits (Cyanistes caeruleus) in Wytham Woods, Oxfordshire. This analysis was run on a subset of data where nest boxes were used more than once in the study period by females that bred more than once (n = 148 nests from 87 females in 99 nest boxes). This model had an R2 of 0.875.
| estimate ± s.e. | T-value | |||
|---|---|---|---|---|
| intercept | 0.327 ± 0.018 | 18.02 | ||
| random effect | Chi d.f. | χ2 | p | |
| box number | 1 | 10.73 | 0.001 | |
| ring number | 1 | 10.37 | 0.001 | |
| compartment | 1 | 4.70 | 0.030 | |
| year | 1 | 0.72 | 0.395 |