Table 20.
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 of breeders that initiated laying in the first and last third of each season (n = 568), d.f.s were calculated from Satterthwaite approximations. This model had an R2 of 0.070.
| parameter | estimate ± s.e. | d.f. | T-value | p-value |
|---|---|---|---|---|
| intercept | 0.338 ± 0.010 | 11.500 | 35.48 | 4.11 × 10−13 |
| lay date category | −0.023 ± 0.009 | 369.900 | −2.46 | 0.014 |
| random effect | Chi d.f. | χ2 | p-value | |
| compartment | 1 | 6.99 | 0.008 | |
| year | 1 | 0.00 | 1.000 |