Table 3. Results of a BMM modelling Lundy island house sparrow female provisioning frequencies (visits/hour) at a location intermittently affected by noise and at control nestboxes during the same time periods (two-level factor with noise off as the reference level). Statistically significant fixed effects are indicated in bold.

Effects	Effect size 95% CI	Effect size 95% CI
	Intermittent noise		Control
Fixed
Intercept	13.73	10.54–16.60	8.27	5.44–10.90
Noise on	−6.54	−10.48–−2.61	0.25	−3.44–4.52
Random
Bird ID	1.54	0.00–7.74	0.26	0.00–4.39
Residual	21.92	9.18–37.71	20.63	8.40–35.73

N _noise  = 22 observation periods on five females, N_quiet  = 20 observation periods on nine females.