Table 1. Individual repeatability in aromatic plant species composition of blue tit nests, both across breeding stages and across years, as tested by analyses of similarity (Anosim, see Materials and Methods).

	Global R	P
Across breeding stages (N = 14 nests, 3 repeated measures per nest)
Female (nest)	0.26	0.002 **
Breeding stage (egg laying, incubation or chick rearing)	0.01	0.31
Across years (N = 27 females)
Female	0.54	<0.001***
Year (2005, 2006 or 2007)	<0.005	0.82

Low P-values mean that similarity within groups is significantly higher than between groups. Global R and P value are both calculated by the Primer v 6.1.6. software.