Table 1.

Annual variation in first egg date, mean egg-laying date, laying synchrony, clutch size and the slope of the relationship between clutch size and laying date in European starlings, 2002–2014. Values for laying date and clutch size are means ± s.d.

year	nests (n)	first egg 1 = 1 Jan	mean first-egg laying date	80% initiation (days)	clutch size	clutch size×date slope (b)
2002	72	97	101.5 ± 2.2	5	5.22 ± 0.91	−0.154**
2003	106	93	97.5 ± 3.2	8	5.05 ± 0.83	−0.129***
2004	97	95	99.1 ± 2.0	5	5.23 ± 0.91	−0.160***
2005	97	97	99.4 ± 2.2	5	5.14 ± 0.82	−0.200***
2006	58	97	99.4 ± 1.2	3	5.38 ± 0.77	−0.385***
2007	71	98	101.7 ± 2.0	5	5.21 ± 1.01	−0.259***
2008	67	101	103.3 ± 2.0	5	5.39 ± 0.72	−0.122**
2009	72	100	103.3 ± 2.3	5	5.25 ± 0.78	−0.069
2010	69	92	95.0 ± 2.2	5	5.04 ± 0.78	−0.099*
2011	75	98	101.3 ± 2.0	4	5.17 ± 0.74	−0.082
2012	65	99	101.3 ± 1.1	2	5.18 ± 0.75	−0.139
2013	79	92	95.9 ± 2.2	6	5.05 ± 0.89	−0.054
2014	66	100	102.3 ± 2.2	5	5.27 ± 0.85	−0.124**

*p < 0.05, ^**p < 0.01, ^***p < 0.001.