Table 1.

Adjusted repeatabilities (intra-class correlation [ICC], with standard error [SE] and confidence intervals [CI]) for the timing of Eastern Whip-poor-will migration events, after controlling for fixed effects

Migration event	Model	Tracks	Ind	Variation from random effect (ICC)	ICC SE	Lower ICC CI	Upper ICC CI	P
Autumn departure date	doy ~ 1 + (1|individual)	48	39	0.77	0.13	0.48	0.93	0.001
	doy ~ area + (1|individual)	48	39	0.63	0.18	0.22	0.9	0.003
	doy ~ area × SeptFullMoon + (1|individual)	48	39	0.64	0.15	0.36	0.94	0.002
Lat 35°N crossing	doy ~ area × SeptFullMoon + (1|individual)	55	40	0.6	0.15	0.29	0.88	0.005
Lat 30°N crossing	doy ~ area × SeptFullMoon + (1|individual)	51	39	0.67	0.14	0.37	0.93	0.01
Winter arrival date	doy ~ area × SeptFullMoon + (1|individual)	36	31	0.8	0.12	0.59	0.99	0.018

Competing models are only reported for autumn departure date. doy = ordinal day of year. area = sampling area. SeptFullMoon = date of September full moon. Tracks = total number of samples collected. Ind = total number of individuals tracked. Sample sizes include both single- and repeat-tracked birds.