Table S1.

Age-specific sample sizes of females and nests used in our statistical analyses and percentage of depredated nests

Reproductive age (y)	Excluding depredated nests		Including depredated nests		Nests predated (%)
	Females	Nests	Females	Nests
1	226	276	590	718	61.6
2	105	151	231	319	52.7
3	59	87	168	245	64.5
4	55	75	166	233	67.8
5	35	51	133	184	72.3
6	42	68	100	145	53.1
7	40	51	85	119	57.1
8	17	35	58	89	60.7
9	6	11	39	59	81.4
10	5	10	21	31	67.7
11	8	15	20	32	53.1
12	7	7	13	17	58.8
13	1	1	9	15	93.3
14	1	2	13	17	88.2
15	4	5	7	11	54.6
Total unique females or nests	355	845	600	2,234	62.2

Data reported for the no. of females represent the total no. of unique nesting females at each age, and the total in the bottom row represents the no. of unique females used in this study, rather than the sum total down each column. Reproductive ages 1–14 reflect actual ages of 5–7 to 18–20 y old, and reproductive age 15 includes individuals that are ≥20 y old.