Table 19.

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 nestboxes were used more than once in the study period by females that bred more than once (n = 148). This model had an R² of 0.861.

	estimate ± s.e.		T-value
intercept	0.326 ± 0.017		19.25
random effect		Chi d.f.	χ2	p-value
box number		1	10.01	0.002
ring number		1	9.77	0.002
compartment		1	4.47	0.034